CLASS 564,	ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
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SUBCLASSES

1	AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF)
	This subclass is indented under subclass 1.  Compounds under Class 532, ... which contain nitrogen in a form other than as nitrogen in an inorganic ion of an addition salt, nitro, or nitroso. (1) Note. This group of compounds includes for example, ureas, thioureas, amides, amidines, azines, hydrazones, carbodiimides, oximes, hydroxylamines, and amines, inter alia, as well as their inorganic acid salts. (2) Note. This subclass is residual for alicyclic amines not specifically provided for below. (3) Note. This subclass contains, for example: (4) Note. If amino nitrogen is present, the compound may additionally contain nitro, nitroso, or nitrogen in an inorganic ion of an addition salt. (5) Note. Component parts of an "adduct" will be considered to be attached to each other ionically, except if it is clear that the mode of attachment is nonionic. SEE OR SEARCH CLASS: 588,  Hazardous or Toxic Waste Destruction or Containment,   subclasses 405 through 409for the chemical destruction of organic hazardous or toxic waste containing halogen, sulfur, oxygen, nitrogen, phosphorus, or metals.

1.5	Adducts or inclusion compounds of urea per se or of of thiourea per se with organic compounds (e.g., urea-alkane inclusion compounds, etc.)
	This subclass is indented under subclass 1.  Compounds wherein urea, per se, of thiourea, per se, forms an adduct or inclusion compound with an organic compound. (1) Note. by adduct or inclusion compound is meant a type of complex in which the urea or thiourea is bound with another suitable chemical without changing the chemical character of either the urea-thiourea or of the other chemical; the respective molecules will be unaltered in their chemical nature and the individual compounds may readily be constituted and isolated. (2) Note. An example of a compound provided for herein is the adduct of urea and an alkane.

2	With preservative or stabilizer
	This subclass is indented under subclass 1.  Products wherein the amino nitrogen containing compound is mixed with a preserving agent whose sole function is to prevent physical or chemical change.

3	Ureas or thioureas with preservative or stabilizer
	This subclass is indented under subclass 2.  Products wherein the compound stabilized or preserved contains the grouping below, wherein X is O or S. NN

4	Carboxamides with preservative or stabilizer
	This subclass is indented under subclass 2.  Products wherein the compound stabilized or preserved is a carboxamide containing the grouping RN

5	Benzene ring containing compound with preservative or stabilizer
	This subclass is indented under subclass 2.  Products wherein the compound being preserved contains a benzene ring.

6	Inorganic preservative or stabilizer
	This subclass is indented under subclass 5.  Products wherein the preserving or stabilizing agent is inorganic.

7	Sulfur or phenol containing preservative or stabilizer
	This subclass is indented under subclass 5.  Products wherein the preserving or stabilizing agent contains sulfur or a phenolic group.

8	Boron containing (e.g., boron containing complexes, salts, etc.)
	This subclass is indented under subclass 1.  Compounds which contain boron. (1) Note. This subclass contains boron containing complexes, adducts, and salts. (2) Note. This subclass contains, for example:

9	Boron attached directly to amino nitrogen by nonionic bonding
	This subclass is indented under subclass 8.  Compounds wherein the boron is directly attached to an amino nitrogen by nonionic bonding. (1) Note. This subclass contains, for example:

10	The boron and amino nitrogen are members of the same ring
	This subclass is indented under subclass 9.  Compounds wherein the nonionically bonded boron and amino nitrogen are both members of the same ring. (1) Note. This subclass contains, for example:

11	Polycyclo ring system having the nitrogen and boron containing ring as one of the cyclos
	This subclass is indented under subclass 10.  Compounds wherein the boron and nitrogen containing ring is part of a polycyclo ring system. (1) Note. This subclass contains, for example:

12	Phosphorus attached directly to amino nitrogen by nonionic bonding
	This subclass is indented under subclass 1.  Compounds which contain phosphorus directly attached to an amino nitrogen by nonionic bonding. (1) Note. This subclass contains, for example:

13	The phosphorus and nitrogen are members of the same ring
	This subclass is indented under subclass 12.  Compounds wherein the phosphorus and amino nitrogen are both members of the same ring. (1) Note. This subclass contains, for example:

14	Chalcogen and plural nitrogens bonded directly to the same phosphorus
	This subclass is indented under subclass 12.  Compounds wherein at least two amino nitrogens and oxygen or sulfur are bonded to the same phosphorus. (1) Note. This subclass contains, for example:

15	Phosphorus attached indirectly to amino nitrogen by nonionic bonding
	This subclass is indented under subclass 1.  Compounds which contain phosphorus indirectly attached to amino nitrogen by nonionic bonding. (1) Note. This subclass contains, for example:

16	The phosphorus is a ring member
	This subclass is indented under subclass 15.  Compounds wherein the phosphorus is a member of a ring. (1) Note. This subclass contains, for example:

17	Thioureas (i.e., HNH-C(=S)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 1.  Compounds which contain the grouping NN (1) Note. This subclass contains, for example: SEE OR SEARCH CLASS: 558,  Organic Compounds,   subclasses 4 and 5 for isothioureas or pseudothioureas.

18	Thiocarbazides or thiosemicarbazides (i.e. HNH-NH-C(=S)-HNH, wherein the N bonded directly to the thiourea N is an amino N and substitution may be made for hydrogen only)
	This subclass is indented under subclass 17.  Compounds which contain the thiocarbazide radical wherein an amino nitrogen is bonded directly to each of the thiorea nitrogens, or the thiosemicarbazide radical wherein an amino nitrogen is bonded to one thiourea nitrogen -N- . (1) Note. This subclass contains, for example:

19	Thiocarbazones or thiosemicarbazones (i.e., HCH=N-NH-C(=S)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 18.  Compounds which contain the thiocarbazone radical (Figure 1) or the thiosemicarbazone radical (Fig.2). FIGURE 1 FIGURE 2 (1) Note. This subclass contains, for example:

20	Benzene ring containing
	This subclass is indented under subclass 19.  Compounds which contain a benzene ring. (1) Note. This subclass contains, for example:

21	Additional nitrogen attached indirectly to the thiocarbonyl by nonionic bonding
	This subclass is indented under subclass 20.  Compounds which contain nitrogen in addition to that of the thiocarbazone or thiosemicarbazone. (1) Note. This subclass contains, for example:

22	Thiobiurets (i.e., HNH-C(=S)-NH-C(=X)-HNH, wherein X is S or O and substitution may be made for hydrogen only)
	This subclass is indented under subclass 17.  Compounds which contain the grouping in the figure below, wherein X may be oxygen or sulfur, i.e., mono- or dithiobiurets. -- (1) Note. This subclass contains, for example:

23	Carbonyl, sulfur, or cyano attached directly to thiourea nitrogen by nonionic bonding
	This subclass is indented under subclass 17.  Compounds wherein a thiourea nitrogen has carbonyl, sulfur, or cyano group directly attached by nonionic bonding. (1) Note. This subclass contains, for example:

24	Processes utilizing carbon disulfide
	This subclass is indented under subclass 17.  Processes wherein carbon disulfide is utilized in preparing a thiourea. (1) Note. This subclass contains, for example, the reaction of aniline and carbon disulfide to produce thiocarbanilide.

25	Processes utilizing cyano containing compound
	This subclass is indented under subclass 17.  Processes wherein a cyano compound is utilized in preparing a thiourea. (1) Note. This subclass contains, for example, the production of thiourea by reaction of cyanamide with hydrogen sulfide.

26	Benzene ring containing
	This subclass is indented under subclass 17.  Compounds which contain a benzene ring. (1) Note. This subclass contains, for example:

27	Nitrogen attached indirectly to the thiocarbonyl by nonionic bonding
	This subclass is indented under subclass 26.  Compounds which contain nitrogen in addition to the thiourea nitrogen. (1) Note. This subclass contains, for example:

28	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 26.  Compounds which contain a hydroxyl group bonded directly to a carbon, or an ether, wherein H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a group IA or IIA light metal. (1) Note. This subclass contains, for example:

29	Halogen attached indirectly to the thiocarbonyl by nonionic bonding
	This subclass is indented under subclass 26.  Compounds which contain halogen nonionically bonded. (1) Note. This subclass contains, for example:

30	Acyclic
	This subclass is indented under subclass 17.  Compounds which do not contain any ring. (1) Note. This subclass contains, for example:

31	Thiourea per se or salt thereof
	This subclass is indented under subclass 30.  The compound which is thiourea, or its salts and processes of preparation not provided for above.

32	Ureas (i.e., HNH-CO-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 1.  Compounds which have the grouping - - (1) Note. This subclass contains, for example, adducts of urea with inorganic compounds such as hydrogen peroxide or calcium nitrate. SEE OR SEARCH THIS CLASS, SUBCLASS: 260, Chemistry of Carbon Compounds, subclass 96.5 for adducts of urea with organic compounds. 558, Organic Compounds, subclass 8 for isoureas or pseudoureas. 564, Organic Compounds, subclass 1.5 for adducts of urea with organic compounds.

33	Nitro or nitroso bonded directly to nitrogen
	This subclass is indented under subclass 32.  Compounds which contain a nitro or nitroso group bonded directly to an amino nitrogen (i.e., nitramine or nitrosamine containing). (1) Note. This subclass contains, for example:

34	Carbazides or semicarbazides (i.e., HNH-NH-CO-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 32.  Compounds which are carbazides or semicarbazides containing the grouping. (1) Note. This subclass contains, for example:

35	Carbonyl or sulfur attached directly to carbazide or semicarbazide nitrogen by nonionic bonding
	This subclass is indented under subclass 34.  Compounds wherein a carbonyl group or sulfur is attached directly to a carbazide or semicarbazide nitrogen by nonionic bonding. (1) Note. This subclass contains, for example:

36	Carbazones or semicarbazones (i.e., HCH=N-NH-CO-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 34.  Compounds which contain the carbazone radical (Fig. 1) or the semicarbazone radical (Fig. 2). FIGURE 1 FIGURE 2 (1) Note. This subclass contains, for example:

37	Acyclic
	This subclass is indented under subclass 34.  Compounds which do not contain any ring. (1) Note. This subclass contains, for example:

38	Biurets (i.e., HNH-CO-NH-CO-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 32.  Compounds which are biurets and contain the grouping -- (1) Note. This subclass contains, for example:

39	Sulfur attached directly to urea nitrogen by nonionic bonding
	This subclass is indented under subclass 32.  Compounds which contain sulfur attached directly to urea nitrogen by nonionic bonding. (1) Note. This subclass contains, for example:

40	The sulfur is part of a substituent which contains nitrogen
	This subclass is indented under subclass 39.  Compounds wherein the sulfur is part of a group which contains additional nitrogen. (1) Note. This subclass contains, for example:

41	The substituent nitrogen is the nitrogen of a benzamido group (e.g., Cl benzene-CO-NH-HCH-(O=)S(=O)-, bonded directly to urea nitrogen, etc.)
	This subclass is indented under subclass 40.  Compounds wherein the additional nitrogen is the nitrogen of a benzamido group. (1) Note. This subclass contains, for example:

42	The sulfur is part of a monocyclic benzene ring containing substituent
	This subclass is indented under subclass 39.  Compounds wherein the sulfur is part of a substituent which is monocyclic and aromatic. (1) Note. This subclass contains, for example:

43	Alicyclic ring bonded directly to urea nitrogen
	This subclass is indented under subclass 42.  Compounds wherein an alicyclic ring is bonded directly to a urea nitrogen. (1) Note. This subclass contains, for example:

44	Additional carbonyl bonded directly to urea nitrogen
	This subclass is indented under subclass 32.  Compounds in which a urea nitrogen has been amidated by a carboxylic acid. (1) Note. This subclass contains, for example:

45	The additional carbonyl is in a substituent which is acyclic
	This subclass is indented under subclass 44.  Compounds wherein the carboxylic acid contains no ring. (1) Note. This subclass contains, for example: SEE OR SEARCH CLASS: 554,  Organic Compounds,   subclass 56 for compounds where the carboxylic acid is a higher fatty acid.

46	Carbon to carbon unsaturation in the substituent
	This subclass is indented under subclass 45.  Compounds wherein the carboxylic acid contains a double or triple bond. (1) Note. This subclass contains, for example:

47	Benzene ring containing
	This subclass is indented under subclass 32.  Compounds which contain a benzene ring (i.e., aromatic). (1) Note. This subclass contains, for example:

48	Benzene ring bonded directly to urea nitrogen (i.e., anilides)
	This subclass is indented under subclass 47.  Compounds which are anilides, wherein a benzene ring is directly bonded to a urea nitrogen. (1) Note. This subclass contains, for example:

49	The benzene ring is part of a substituent which contains sulfur
	This subclass is indented under subclass 48.  Compounds wherein the benzene ring is part of a substituent which contains sulfur (1) Note. This subclass contains, for example:

50	The benzene ring is part of a substituent which contains nitrogen
	This subclass is indented under subclass 48.  Compounds wherein the benzene ring is part of a substituent which contains additional nitrogen. (1) Note. This subclass contains, for example:

51	The substituent nitrogen is attached indirectly to the benzene ring by acyclic nonionic bonding
	This subclass is indented under subclass 50.  Compounds wherein the additional nitrogen is indirectly bonded to the benzene ring by acyclic nonionic bonding. (1) Note. This subclass contains, for example:

52	The benzene ring is part of a substituent which contains oxygen
	This subclass is indented under subclass 48.  Compounds wherein the benzene ring is part of a substituent which contains oxygen. (1) Note. This subclass contains, for example:

53	The benzene ring is part of a substituent which contains halogen bonded directly to carbon
	This subclass is indented under subclass 48.  Compounds wherein the benzene ring is part of a substituent which contains halogen bonded directly to carbon. (1) Note. This subclass contains, for example:

54	The halogen is fluorine
	This subclass is indented under subclass 53.  Compounds wherein the halogen is fluorine. (1) Note. This subclass contains, for example:

55	Plural benzene rings bonded directly to urea nitrogen
	This subclass is indented under subclass 48.  Compounds wherein more than one benzene ring is bonded directly to the same urea nitrogen or to different urea nitrogen. (1) Note. This subclass contains, for example:

56	Aralkyl bonded directly to urea nitrogen
	This subclass is indented under subclass 47.  Compounds wherein an aralkyl group is bonded directly to a urea nitrogen. (1) Note. This subclass contains, for example:

57	Alicyclic ring containing
	This subclass is indented under subclass 32.  Compounds which contain an alicyclic group. (1) Note. This subclass contains, for example:

58	Additional carbon bonded directly to urea nitrogen
	This subclass is indented under subclass 32.  Compounds which contain an alkyl or substituted alkyl group bonded directly to a urea nitrogen. (1) Note. This subclass contains, for example:

59	The additional carbon is part of a substituent which contains nitrogen
	This subclass is indented under subclass 58.  Compounds wherein the alkyl group contains an additional nitrogen. (1) Note. This subclass contains, for example:

60	The additional carbon is part of a substituent which contains oxygen
	This subclass is indented under subclass 58.  Compounds wherein the alkyl group contains oxygen as a substituent. (1) Note. This subclass contains, for example:

61	Processes
	This subclass is indented under subclass 58.  Processes for the preparation, purification, separation, or recovery of compounds classified therein.

62	Preparing directly from compound having carbon to carbon unsaturation
	This subclass is indented under subclass 61.  Processes wherein one of the starting materials contain a double or triple bond between two carbons.

63	Urea per se or salt thereof
	This subclass is indented under subclass 32.  The compound which is urea or salts thereof. SEE OR SEARCH THIS CLASS, SUBCLASS: 32, for complexes of urea with inorganic compounds.

64	Preparing directly from cyano containing compound
	This subclass is indented under subclass 63.  Processes which utilize a cyano containing compound, for example, calcium cyanamide in the preparation of urea.

65	Preparing directly from ammonia and carbonmonoxide or carbon oxysulfide (e.g., from ammonia and COS, etc.)
	This subclass is indented under subclass 63.  Processes in which urea is prepared by reacting ammonia with carbon monoxide or carbon oxysulfide.

66	Preparing directly from ammonium carbamate (i.e., from HNH-COO-HHNHH)
	This subclass is indented under subclass 63.  Processes in which urea is prepared directly from ammonium carbamate. SEE OR SEARCH THIS CLASS, SUBCLASS: 70, for the preparation of urea from ammonia and carbon dioxide which includes the decomposition of by-product ammonium carbamate.

67	Preparing directly from ammonia and carbon dioxide
	This subclass is indented under subclass 63.  Processes wherein urea is prepared by the reaction of ammonia with carbon dioxide.

68	With corrosion inhibiting of reactor
	This subclass is indented under subclass 67.  Processes which include the prevention of corrosion of the reactor.

69	With ammonia synthesis
	This subclass is indented under subclass 67.  Processes which include the step of synthesizing ammonia.

70	With decomposition of by-product ammonium carbamate (i.e., decomposition of HNH-COO-HHNHH)
	This subclass is indented under subclass 67.  Processes wherein by-product ammonium carbamate is decomposed. SEE OR SEARCH THIS CLASS, SUBCLASS: 66, for the preparation of urea directly from ammonium carbamate.

71	Utilizing indirect heat exchange
	This subclass is indented under subclass 70.  Processes which utilize indirect heat exchange.

72	In plural stages
	This subclass is indented under subclass 70.  Processes wherein the decomposition of ammonium carbamate is performed in plural stages.

73	Purification or recovery
	This subclass is indented under subclass 63.  Processes directed to the purification, separation, or recovery of urea.

74	Thiocarboxamides (i.e., compounds containing -C(=S)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 1.  Compounds which are thiocarboxamides containing the grouping N. (1) Note. This subclass contains, for example:

75	Sulfur bonded directly to the thiocarbonyl
	This subclass is indented under subclass 74.  Compounds which contain the grouping -S- not provided for above. (1) Note. This subclass contains, for example:

76	Thiuram sulfides (e.g., HNH-C(=S)-S-S-C(=S)-HN-alkyl, etc.)
	This subclass is indented under subclass 75.  Compounds which are thiuram sulfides containing the grouping below wherein X is a positive integer. (1) Note. This subclass contains, for example:

77	Thiooxamides (i.e., HNH-C(=S)-C(=X)-HNH, wherein X is S or O and substitution may be made for hydrogen only)
	This subclass is indented under subclass 74.  Compounds which are thioxamides containing the grouping -- wherein X may be oxygen or sulfur. (1) Note. This subclass contains, for example:

78	Acyclic
	This subclass is indented under subclass 74.  Compounds which do not contain a ring. (1) Note. This subclass contains, for example:

79	Sulfamides (i.e., HNH-(O=)S(=O)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 1.  Compounds which are diamides of sulfuric acid (i.e., sulfamides) and contain the grouping (1) Note. This subclass contains, for example:

80	Sulfonamides (i.e., Q-(O=)S(=O)-HNH, wherein Q is a substituent and wherein any substituent replacing one or both hydrogens shown will be referred to as E)
	This subclass is indented under subclass 1.  Compounds which are sulfonamides and contain the grouping below wherein R-SO2- is the residue of a sulfonic acid and N is the residue of an amino nitrogen containing compound. (1) Note. This subclass contains, for example:

81	Hydrazine containing
	This subclass is indented under subclass 80.  Compounds which contain a hydrazine group. (1) Note. This subclass contains, for example:

82	Plural sulfonamide groups containing or containing plural sulfonyls bonded directly to the same nitrogen
	This subclass is indented under subclass 80.  Compounds which contain more than one sulfonamide group or contain plural sulfonyls bonded directly to the same nitrogen. (1) Note. This subclass contains, for example:

83	Two sulfonamido sulfonyls having no sulfonamido nitrogen between the sulfonyls
	This subclass is indented under subclass 82.  Compounds wherein the sulfonyls of two sulfonamide groups contain no sulfonamide nitrogen between them. (1) Note. This subclass contains, for example:

84	Substituent Q contains benzene ring
	This subclass is indented under subclass 80.  Compounds wherein the sulfonic acid residue is aromatic (i.e., benzene ring containing). (1) Note. This subclass contains, for example:

85	Sulfur in substituent Q
	This subclass is indented under subclass 84.  Compounds wherein the aromatic sulfonic acid residue contains sulfur. (1) Note. This subclass contains, for example:

86	Nitrogen in substituent Q
	This subclass is indented under subclass 84.  Compounds wherein the residue of the aromatic sulfonic acid contains nitrogen. (1) Note. This subclass contains, for example:

87	Nitro or nitroso in substituent Q
	This subclass is indented under subclass 86.  Compounds wherein the residue of the aromatic sulfonic acid contains a nitro or nitroso group bonded directly to a carbon atom. (1) Note. This subclass contains, for example:

88	Carbonyl in substituent Q
	This subclass is indented under subclass 84.  Compounds wherein the residue of the aromatic sulfonic acid contains a carbonyl group. (1) Note. This subclass contains, for example:

89	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 84.  Compounds wherein the residue of the aromatic sulfonic acid contains a hydroxyl group bonded directly to carbon or an ether wherein the H of the OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

90	Substituent Q is monocyclic
	This subclass is indented under subclass 84.  Compounds wherein the residue of the aromatic sulfonic acid is monocyclic. (1) Note. This subclass contains, for example:

91	Carbonyl, cyano, nitro, nitroso, halogen, or sulfur attached directly to the sulfonamide nitrogen or to an amino nitrogen in a substituent E by nonionic bonding
	This subclass is indented under subclass 90.  Compounds wherein the amino nitrogen compound residue contains a carbonyl, cyano, nitro, nitroso, halogen, or sulfur attached directly to the sulfonamido nitrogen or to an amino nitrogen by nonionic bonding. (1) Note. For purposes of this classification compounds having the structure RSO2-N-halogen are considered to be acid halides of analogs of hydroxamic acids and are classified in Class 562, subclass 837. (2) Note. This subclass contains, for example:

92	Benzene ring in a substituent E
	This subclass is indented under subclass 90.  Compounds wherein the amino nitrogen compound residue contains a benzene ring. (1) Note. This subclass contains, for example:

93	Hydroxy, bonded directly to carbon, or ether in a substituent E (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 90.  Compounds wherein the amino nitrogen compound residue contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

94	Nitrogen in an acyclic substituent E
	This subclass is indented under subclass 90.  Compounds wherein the amino nitrogen compound residue contains an additional nitrogen. (1) Note. This subclass contains, for example:

95	Substituent Q is acyclic
	This subclass is indented under subclass 80.  Compounds wherein the sulfonic acid residue contains no ring. (1) Note. This subclass contains, for example:

96	Halogen in substituent Q attached indirectly to the sulfonamide sulfur by nonionic bonding
	This subclass is indented under subclass 95.  Compounds wherein the sulfonic acid residue contains halogen nonionically bonded. (1) Note. This subclass contains, for example: F3C-(CF2)7-SO2NH-C2H4-N-(C2H5)2 H17C8-SO2NH-(CH2)3-(OCH2CH2)3-O-CH3

97	Benzene ring in a substituent E
	This subclass is indented under subclass 96.  Compounds wherein the amino nitrogen compound residue contains a benzene ring. (1) Note. This subclass contains, for example:

98	Substituent Q is alkyl
	This subclass is indented under subclass 95.  Compounds wherein the sulfonic acid residue consists of unsubstituted alkyl. (1) Note. This subclass contains, for example: H3C - CH2 - CH2 - CH2 - SO2 - NH - CH3

99	Benzene ring in a substituent E
	This subclass is indented under subclass 98.  Compounds wherein the amine nitrogen compound residue contains a benzene ring. (1) Note. This subclass contains, for example:

100	Sulfur and amino nitrogen attached directly to the same sulfur by nonionic bonding
	This subclass is indented under subclass 1.  Compounds which are thiosulfenamides containing the grouping -- S - S - (1) Note. This subclass contains, for example:

101	Plural amino nitrogens attached directly to the same sulfur, or oxygen double bonded and amino nitrogen attached directly to the same sulfur, all by nonionic bonding (e.g., sulfinamides, etc.)
	This subclass is indented under subclass 1.  Compounds which contain two amino nitrogens nonionically bonded directly to the same sulfur or which contain sulfur doubly bonded to oxygen and directly attached to an amino nitrogen by nonionic bonding, as for example, sulfinamides. (1) Note. This subclass contains, for example:

102	Sulfur attached directly to amino nitrogen by nonionic bonding (e.g., sulfenamides, etc.)
	This subclass is indented under subclass 1.  Compounds which contain sulfur bonded directly to an amino nitrogen by nonionic bonding, as for example, sulfenamides. (1) Note. This subclass contains, for example:

103	Cyanamides (i.e., compounds containing cyano bonded directly to amino nitrogen)
	This subclass is indented under subclass 1.  Compounds which are cyanamides wherein a cyano group is bonded directly to an amino nitrogen. (1) Note. This subclass contains, for example:

104	Cyanoguanidines (i.e., HNH-C(=NH)-HNH, wherein -CN is substituted for one of the hydrogens and substitution may be made for the remaining hydrogens only)
	This subclass is indented under subclass 103.  Compounds wherein the cyano group is bonded directly to a nitrogen of a guanidine group. (1) Note. This subclass contains, for example:

105	Benzene ring containing
	This subclass is indented under subclass 103.  Compounds which contain a benzene ring. (1) Note. This subclass contains, for example:

106	Acyclic
	This subclass is indented under subclass 103.  Compounds which contains no ring. (1) Note. This subclass contains, for example: NC - NH - ( CH2CH2 -O )3 - CH2CH2 -OH

107	Nitramines (i.e., compounds containing nitro bonded directly to amino nitrogen)
	This subclass is indented under subclass 1.  Compounds which are nitramines wherein a nitro group is attached directly to an amino nitrogen. (1) Note. This subclass contains, for example:

108	Containing nitrogen double bonded directly to carbon (e.g., nitroguanidines, etc.)
	This subclass is indented under subclass 107.  Compounds which contain an amino nitrogen doubly bonded to carbon. (1) Note. This subclass contains, for example:

109	Acyclic
	This subclass is indented under subclass 107.  Compounds which do not contain a ring. (1) Note. This subclass contains, for example:

110	Containing nitro bonded directly to carbon (i.e., plural nitro groups containing)
	This subclass is indented under subclass 109.  Compounds which contain a nitro group bonded directly to carbon. (1) Note. This subclass contains, for example:

111	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 110.  Compounds which contain hydroxy bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

112	Nitrosamines (i.e., compounds containing nitroso bonded directly to amino nitrogen)
	This subclass is indented under subclass 1.  Compounds which are nitrosamines, wherein a nitroso group is attached directly to an amino nitrogen. (1) Note. This subclass contains, for example:

113	Acyclic
	This subclass is indented under subclass 112.  Compounds which do not contain a ring. (1) Note. This subclass contains, for example:

114	Haloamines (i.e., compounds containing halogen attached directly to amino nitrogen by nonionic bonding)
	This subclass is indented under subclass 1.  Compounds which are haloamines, wherein halogen is attached directly to an amino nitrogen by nonionic bonding. (1) Note. This subclass contains, for example: SEE OR SEARCH CLASS: 562,  Organic Compounds,   subclasses 800+ for compounds wherein halogen is nonionically bonded to the nitrogen of a carboxamide.

115	Containing nitrogen double bonded directly to carbon
	This subclass is indented under subclass 114.  Compounds which contain nitrogen doubly bonded to carbon. (1) Note. This subclass contains, for example:

116	Amidine containing (i.e., containing -C(=N)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 115.  Compounds which contain the amidine group (1) Note. This subclass contains, for example:

117	Alicyclic ring containing
	This subclass is indented under subclass 114.  Compounds which contain an alicyclic group. (1) Note. This subclass contains, for example:

118	Acyclic
	This subclass is indented under subclass 114.  Compounds which do not contain a ring. (1) Note. This subclass contains, for example:

119	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 118.  Compounds which contain a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

120	Carbon to carbon unsaturation containing
	This subclass is indented under subclass 118.  Compounds which contain a carbon to carbon double or triple bond. (1) Note. This subclass contains, for example:

121	Plural difluoramine groups containing
	This subclass is indented under subclass 118.  Compounds which contain plural difluoramino groups. (1) Note. This subclass contains, for example:

122	Plural difluoramine groups bonded directly to the same carbon
	This subclass is indented under subclass 121.  Compounds wherein the plural difluoramino groups are bonded directly to the same carbon. (1) Note. This subclass contains, for example:

123	Carboxamides (i.e., Q-CO-HNH, wherein Q is a substituent having carbon bonded directly to the carbonyl or is hydrogen and wherein any substituent replacing one or both hydrogens shown will be referred to as E)
	This subclass is indented under subclass 1.  Compounds which are carboxamides and contain one of the groupings (1) Note. This subclass contains, for example: SEE OR SEARCH CLASS: 260,  Chemistry of Carbon Compounds,   subclasses 401 , 402.5, 404 and 404.5 for amides of higher fatty acids. 530,  Chemistry: Natural Resins or Derivatives; Peptides or Reaction Products Thereof,   subclasses 200+ for amides of natural resin acids wherein the acids are the mixture of acids naturally occurring in natural resins or for a natural resin acid amide wherein the amide does not have a known chemical structure. 554,  Organic Compounds,   subclasses 35+ for amides of higher fatty acids.

124	Preparing directly from cyano containing compound
	This subclass is indented under subclass 123.  Processes wherein a carboxamide is prepared directly from a cyano containing compound. (1) Note. Processes which involve catalytic hydration or hydrolysis of nitriles combined with other chemical reactions, such as for example, reduction of a nitro group to an amine are placed in this subclass. Where the only reaction is catalytic hydration, see subclasses 126+; and where the only reaction is acid hydrolysis, see subclass 129, even if purification or recovery steps are included.

125	From HCN or cyanogen
	This subclass is indented under subclass 124.  Processes which utilize HCN or cyanogen in the preparation of a carboxamide. (1) Note. This subclass includes, for example:

126	Catalytic hydration only of nitrile
	This subclass is indented under subclass 124.  Processes wherein the sole chemical reaction for amide formation is the hydrolysis of a nitrile in water in the presence of a catalyst. (1) Note. For processes including simultaneous hydrolysis and other reactions, such as for example, amination, alkylation, or reduction, see subclass 124. (2) Note. This subclass includes the combination of hydrolysis followed by purification or recovery.

127	Copper containing catalyst utilized
	This subclass is indented under subclass 126.  Processes which utilize a copper containing catalyst.

128	Of acrylonitriles
	This subclass is indented under subclass 126.  Processes wherein acrylonitriles are catalytically hydrated.

129	Acid hydrolysis only of nitrile
	This subclass is indented under subclass 124.  Processes wherein the sole chemicl reaction for amide formation is the acid hydrolysis of a nitrile. (1) Note. This subclass includes the combination of hydrolysis followed by purification or recovery. SEE OR SEARCH THIS CLASS, SUBCLASS: 124, for processes including simultaneous acid hydrolysis combined with other reactions.

130	From acyclic nitrile
	This subclass is indented under subclass 124.  Processes wherein a carboxamide is prepared from a nitrile which contains no ring.

131	Which contains carbon to carbon unsaturation
	This subclass is indented under subclass 130.  Processes wherein the nitrile contains a double or triple bond between two carbons.

132	Preparing directly from carbon monoxide or carbon dioxide
	This subclass is indented under subclass 123.  Processes wherein a carboxamide is prepared by a reaction utilizing carbon monoxide or carbon dioxide. (1) Note. This subclass contains for example, the reaction of an aliphatic alcohol with ammonia and carbon monoxide to prepare a formamide, or the reaction of an amine with carbon dioxide and hydrogen to prepare a formamide.

133	Preparing directly by amidation of -C(=O)X group, where X is O- or halogen
	This subclass is indented under subclass 123.  Processes wherein a carboxamide is formed by reaction of a carboxylic acid, salt, ester, acid halide, or anhydride with ammonia or an amino nitrogen containing compound.

134	Of carboxylic acid ester
	This subclass is indented under subclass 133.  Processes wherein a carboxylic acid ester is utilized.

135	Having acyclic acid moiety
	This subclass is indented under subclass 134.  Processes wherein the carboxylic acid of the ester does not contain a ring.

136	Additional oxygen in the acid moiety
	This subclass is indented under subclass 135.  Processes wherein the carboxylic acid of the ester contains additional oxygen.

137	Lower fatty acid
	This subclass is indented under subclass 135.  Processes wherein the carboxylic acid of the ester is a lower fatty acid.

138	Of carboxylic acid
	This subclass is indented under subclass 133.  Processes wherein a carboxylic acid is utilized.

139	Benzene ring containing
	This subclass is indented under subclass 138.  Processes wherein the carboxylic acid contains a benzene ring.

140	Hydroxy naphthoic
	This subclass is indented under subclass 139.  Processes wherein hydroxy naphthoic acid is utilized.

141	Lower fatty acid
	This subclass is indented under subclass 138.  Processes wherein a lower fatty acid is utilized.

142	Of carboxylic acid halide
	This subclass is indented under subclass 133.  Processes wherein a carboxylic acid halide is utilized.

143	Acyclic
	This subclass is indented under subclass 142.  Processes wherein the carboxylic acid halide does not contain a ring.

144	Of acyclic carboxylic acid anhydride
	This subclass is indented under subclass 133.  Processes wherein a carboxylic acid anhydride which does not have a ring is utilized.

145	Preparing directly by reacting sulfur or sulfur containing compound with ammonia; or directly from ammonium polysulfide
	This subclass is indented under subclass 123.  Processes wherein a carboxamide is prepared by utilizing a mixture of sulfur or a sulfur containing compound with ammonia or by utilizing an ammonium polysulfide, as for example, by the Willgerodt reaction.

146	Preparing directly by nitration
	This subclass is indented under subclass 123.  Processes wherein a nitro group is introduced into a carboxamide.

147	Aminimine containing
	This subclass is indented under subclass 123.  Compounds which are aminimines and contain the grouping (1) Note. This subclass contains, for example:

148	Hydrazine containing
	This subclass is indented under subclass 123.  Compounds which contain a hydrazine group. (1) Note. This subclass contains, for example:

149	Substituent Q contains benzene ring
	This subclass is indented under subclass 148.  Compounds wherein the carboxylic acid residue contains a benzene ring. (1) Note. This subclass contains, for example:

150	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 149.  Compounds wherein the carboxylic acid residue contains hydroxy bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

151	Substituent Q is acyclic
	This subclass is indented under subclass 148.  Compounds wherein the carboxylic acid residue does not contain a ring. (1) Note. This subclass contains, for example:

152	Plural carboxamide groups containing or containing plural carbonyls bonded directly to the same nitrogen
	This subclass is indented under subclass 123.  Compounds which contain more than one carboxamide group or contain plural carbonyls bonded directly to the same nitrogen. (1) Note. This subclass contains, for example:

153	Three or more carboxamide groups
	This subclass is indented under subclass 152.  Compounds which contain three or more carboxamides. (1) Note. This subclass contains, for example:

154	Sulfur containing
	This subclass is indented under subclass 152.  Compounds which contain nonionically bonded sulfur. (1) Note. This subclass contains, for example:

155	Benzene ring containing
	This subclass is indented under subclass 152.  Compounds which contain a benzene ring. (1) Note. This subclass contains, for example:

156	Two carboxamido carbonyls having benzene ring between the carbonyls and no carboxamido nitrogen between the carbonyls
	This subclass is indented under subclass 155.  Compounds wherein the carbonyls of two carboxamides have a benzene ring between them and no carboxamide nitrogen between them. (1) Note. This subclass contains, for example:

157	Amino nitrogen, not bonded directly to carbonyl, containing
	This subclass is indented under subclass 155.  Compounds which contain a noncarboxamide amino nitrogen. (1) Note. This subclass contains, for example:

158	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 155.  Compounds which contain a hydroxyl bonded directly to carbon, or ether, wherein the H of -OH may be replaced by a substituted or unsubstitued ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

159	Acyclic
	This subclass is indented under subclass 152.  Compounds which contain no ring. (1) Note. This subclass contains, for example:

160	Two carboxamido carbonyls having no carboxamido nitrogen between the carbonyls
	This subclass is indented under subclass 159.  Compounds wherein the carbonyls of two carboxamides have no carboxamide nitrogen between them. (1) Note. This subclass contains, for example:

161	Substituent Q contains benzene ring
	This subclass is indented under subclass 123.  Compounds wherein the residue of the carboxylic acid contains a benzene ring. (1) Note. This subclass contains, for example:

162	Sulfur in substituent Q
	This subclass is indented under subclass 161.  Compounds wherein the residue of the carboxylic acid contains sulfur. (1) Note. This subclass contains, for example: SEE OR SEARCH THIS CLASS, SUBCLASS: 80+, 100, 101, and 102, for carboxamides which also contain sulfur bonded directly to amino nitrogen.

163	Nitrogen in substituent Q
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains nitrogen. (1) Note. This subclass contains, for example:

164	The substituent nitrogen is an amino nitrogen attached indirectly to a ring by acyclic nonionic bonding
	This subclass is indented under subclass 163.  Compounds wherein the carboxylic acid residue contains an amine nitrogen indirectly attached to a ring through a carbon or through an acyclic chain. (1) Note. This subclass contains, for example:

165	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 164.  Compounds wherein the carboxylic acid residue contains a hydroxyl bonded directly to carbon or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

166	Nitro in substituent Q
	This subclass is indented under subclass 163.  Compounds wherein the residue of the carboxylic acid contains a nitro group. (1) Note. This subclass contains, for example:

167	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 163.  Compounds wherein the carboxylic acid residue contains a hydroxyl bonded directly to carbon or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

168	Ring in a substituent E
	This subclass is indented under subclass 163.  Compounds wherein the amino nitrogen containing residue contains a ring. (1) Note. This subclass contains, for example:

169	Carbonyl in substituent Q
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains an aldehyde or ketone group. (1) Note. This subclass contains, for example:

170	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains a hydroxyl bonded directly to carbon or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

171	Plural rings in substituent Q
	This subclass is indented under subclass 170.  Compounds wherein the carboxylic acid residue contains more than one ring. (1) Note. This subclass contains, for example:

172	Polycyclo ring system in substituent Q
	This subclass is indented under subclass 171.  Compounds wherein the carboxylic acid residue contains a polycyclo ring system. (1) Note. This subclass contains, for example:

173	Q contains an ortho-hydroxy naphthyl bicyclo ring system, or its partially hydrogenated form, bonded directly to the carbonyl (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 172.  Compounds wherein the carboxylic acid residue is an ortho-hydroxy naphthoic acid or a partially hydrogenated form thereof. (1) Note. This subclass contains, for example:

174	Ring in a substituent E
	This subclass is indented under subclass 171.  Compounds wherein the amino nitrogen residue contains a ring. (1) Note. This subclass contains, for example:

175	Oxygen, bonded directly to the benzene ring, is part of an acyclic chain between the benzene ring and the carbonyl
	This subclass is indented under subclass 170.  Compounds wherein the carboxylic acid residue contains oxygen which is directly bonded to a benzene ring and is part of an acyclic chain which also contains the acid carbonyl group. (1) Note. This subclass contains, for example:

176	Benzene ring bonded directly to the carbonyl
	This subclass is indented under subclass 170.  Compounds wherein the carboxylic acid residue contains a benzene ring bonded directly to the acid carbonyl group. (1) Note. This subclass contains, for example:

177	Hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 176.  Compounds wherein the carboxylic acid residue contains a hydroxy group or its Group IA or IIA light metal or ammonium derivative bonded directly to a benzene ring. (1) Note. This subclass contains, for example:

178	Preparing directly by halogenation
	This subclass is indented under subclass 177.  Processes wherein the compounds are prepared directly by halogenation.

179	Benzene ring in a substituent E
	This subclass is indented under subclass 177.  Compounds wherein the amino nitrogen containing residue has a benzene ring. (1) Note. This subclass contains, for example:

180	Polycyclo ring system in substituent Q
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains a polycyclo ring system. (1) Note. This subclass contains, for example:

181	Two rings bonded directly to the same carbon in substituent Q
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains two rings bonded directly to the same carbon. (1) Note. This subclass contains, for example:

182	Substituent Q is monocyclic
	This subclass is indented under subclass 161.  Compounds wherein the carboxylic acid residue contains only one ring. (1) Note. This subclass contains, for example:

183	The ring is bonded directly to the carbonyl
	This subclass is indented under subclass 182.  Compounds wherein the carboxylic acid residue contains a benzene ring bonded directly to the acid carbonyl. (1) Note. This subclass contains, for example:

184	Benzene ring in a substituent E
	This subclass is indented under subclass 183.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

185	Ring or polycyclo ring system in substituent E is attached indirectly to the carboxamide nitrogen or to an amino nitrogen in substituent E by acyclic nonionic bonding
	This subclass is indented under subclass 184.  Compounds wherein the amino nitrogen containing residue contains a ring or a polycyclo ring system which is attached indirectly to the carboxamido nitrogen or to an additional amino nitrogen in the amino nitrogen containing residue by acyclic nonionic bonding. (1) Note. This subclass contains, for example:

186	Oxygen in a substituent E
	This subclass is indented under subclass 183.  Compounds wherein the amino nitrogen containing residue contains oxygen. (1) Note. This subclass contains, for example:

187	Acyclic carbon to carbon unsaturation in a substituent E
	This subclass is indented under subclass 183.  Compounds wherein the amino nitrogen containing residue contains a double or triple bond between two carbons. (1) Note. This subclass contains, for example:

188	Plural alicyclic rings in substituent Q
	This subclass is indented under subclass 123.  Compounds wherein the carboxylic acid residue contains more than one alicyclic ring. (1) Note. This subclass contains, for example:

189	Five-membered ring in substituent Q
	This subclass is indented under subclass 123.  Compounds wherein the carboxylic acid residue contains a five-membered ring. (1) Note. This subclass contains, for example:

190	Three-membered ring in substituent Q
	This subclass is indented under subclass 123.  Compounds wherein the carboxylic acid residue contains a three-membered ring. (1) Note. This subclass contains, for example:

191	Alicyclic ring and an atom other than oxygen, carbon, or hydrogen in substituent Q
	This subclass is indented under subclass 123.  Compounds wherein the carboxylic acid residue contains an alicyclic ring and an atom other than carbon, hydrogen, or oxygen. (1) Note. This subclass contains, for example:

192	Substituent Q is acyclic
	This subclass is indented under subclass 123.  Compounds wherein the carboxylic acid residue does not contain a ring. (1) Note. This subclass contains, for example:

193	Nitrogen in substituent Q
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue contains nitrogen. (1) Note. This subclass contains, for example:

194	Benzene ring in a substituent E
	This subclass is indented under subclass 193.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

195	Two rings bonded directly to the same carbon in a substituent E
	This subclass is indented under subclass 194.  Compounds wherein the amino nitrogen containing residue contains two rings bonded directly to the same carbon. (1) Note. This subclass contains, for example:

196	A ring or polycyclo ring system in a substituent E is attached indirectly to the carboxamide nitrogen or to an amino nitrogen in substituent E by acyclic nonionic bonding
	This subclass is indented under subclass 194.  Compounds wherein the amino nitrogen containing residue contains a ring or a polycyclo ring system which is attached indirectly to the carboxamido nitrogen or to an additional amino nitrogen in the amino nitrogen containing residue by acyclic nonionic bonding. (1) Note. This subclass contains, for example:

197	The compound is acyclic
	This subclass is indented under subclass 193.  Compounds wherein the amino nitrogen containing residue does not contain a ring. (1) Note. This subclass contains, for example:

198	The carboxamide nitrogen is unsubstituted
	This subclass is indented under subclass 197.  Compounds wherein the amino nitrogen containing residue is unsubstituted. (1) Note. This subclass contains, for example:

199	Carbonyl in substituent Q
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue contains an aldehyde or keto group. (1) Note. This subclass contains, for example:

200	Benzene ring in a substituent E
	This subclass is indented under subclass 199.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

201	Hydroxy, bonded directly to carbon, or ether in substituent Q (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

202	Benzene ring in a substituent E
	This subclass is indented under subclass 201.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

203	Hydroxy, bonded directly to carbon, or ether in an acyclic substituent E (Hof -OH may be replaced by a substituted or unsubstututed ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 201.  Compounds wherein the amino nitrogen containing residue does not have a ring and contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

204	Carbon to carbon unsaturation in substituent Q
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue contains a double or triple bond between two carbons. (1) Note. This subclass contains, for example:

205	Process which includes forming the unsaturation
	This subclass is indented under subclass 204.  Processes wherein unsaturation is introduced into the carboxylic acid residue of a carboxamide, as for example, by pyrolyzing an alkoxy or acetoxy alkanoic acid amide to split off the alkoxy or acetoxy groups, respectively.

206	Purification or recovery
	This subclass is indented under subclass 204.  Processes directed to the purification, separation, or recovery of unsaturated carboxylic acid amides.

207	Benzene ring in a substituent E
	This subclass is indented under subclass 204.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

208	Hydroxy, bonded directly to carbon, or ether in an acyclic substituent E (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 204.  Compounds wherein the amino nitrogen containing residue does not have a ring and contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

209	Halogen, bonded directly to carbon, in substituent Q
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue contains halogen bonded directly to carbon. (1) Note. This subclass contains, for example:

210	Ring in a substituent E
	This subclass is indented under subclass 209.  Compounds wherein the amino nitrogen containing residue contains a ring. (1) Note. This subclass contains, for example:

211	Benzene ring in a substituent E
	This subclass is indented under subclass 210.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

212	A ring or polycyclo ring system in a substituent E is attached indirectly to the carboxamide nitrogen or to an amino nitrogen in substituent E by acyclic nonionic bonding
	This subclass is indented under subclass 211.  Compounds wherein the amino nitrogen containing residue contains a ring or a polycyclo ring system which is attached indirectly to the carboxamido nitrogen or to an additional amino nitrogen in the amino nitrogen containing residue by acyclic nonionic bonding. (1) Note. This subclass contains, for example:

213	Nitro and hydroxy, bonded directly to carbon, or ether in the substituent E (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 212.  Compounds wherein the amino nitrogen containing residue contains a nitro group and an ether, or contains a nitro group an a hydroxyl, which hydroxyl is bonded directly to carbon and wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

214	The compound is monocyclic
	This subclass is indented under subclass 211.  Compounds wherein the amino nitrogen containing residue contains only one ring. (1) Note. This subclass contains, for example:

215	Q is hydrogen or a lower saturated alkyl substituent
	This subclass is indented under subclass 192.  Compounds wherein the carboxylic acid residue is from a lower fatty acid. (1) Note. This subclass contains, for example:

216	Purification or recovery
	This subclass is indented under subclass 215.  Processes directed to the purification, separation, or recovery of lower fatty acid amides.

217	Ring in a substituent E
	This subclass is indented under subclass 215.  Compounds wherein the amino nitrogen containing residue contains a ring. (1) Note. This subclass contains, for example:

218	Benzene ring in a substituent E
	This subclass is indented under subclass 217.  Compounds wherein the amino nitrogen containing residue contains a benzene ring. (1) Note. This subclass contains, for example:

219	A ring or polycyclo ring system in a substituent E is attached indirectly to the carboxamide nitrogen or to an amino nitrogen in substituent E by acyclic nonionic bonding
	This subclass is indented under subclass 218.  Compounds wherein the amino nitrogen containing residue contains a ring or a polycyclo ring system which is attached indirectly to the carboxamido nitrogen or to an additional amino nitrogen in the amino nitrogen containing residue by acyclic nonionic bonding. (1) Note. This subclass contains, for example:

220	Amino nitrogen in the substituent E (i.e.,plural amino nitrogens containing)
	This subclass is indented under subclass 219.  Compounds wherein the amino nitrogen containing residue contains an additional amino nitrogen. (1) Note. This subclass contains, for example:

221	Plural rings in a substituent E
	This subclass is indented under subclass 218.  Compounds wherein the amino nitrogen containing residue contains more than one ring. (1) Note. This subclass contains, for example:

222	Polycyclo ring system in a substituent E
	This subclass is indented under subclass 221.  Compounds wherein the amino nitrogen containing residue contains a polycyclo ring system. (1) Note. This subclass contains, for example:

223	Hydroxy, bonded directly to carbon, or ether in a substituent E (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 218.  Compounds wherein the amino nitrogen containing residue contains a hydroxyl bonded directly to carbon, or an ether, where H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

224	Hydroxy, bonded directly to carbon, ether or nitrogen in a substituent E (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 215.  Compounds wherein the amino nitrogen residue contains a hydroxyl bonded directly to carbon, or an ether or an additional nitrogen, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA and IIA light metal. (1) Note. This subclass contains, for example:

225	Amidines (i.e., HN=CH-HNH, wherein substition may be made for hydrogen only)
	This subclass is indented under subclass 1.  Compounds which are amidines and contains the grouping (1) Note. This subclass contains, for example:

226	Amidino hydrazines or hydrazones (i.e., HNH-N=CH-HNH or HN=CH-NH-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 225.  Compounds which are amidino hydrazine containing the grouping in Fig. 1 or amidino hydrazones containing the grouping in Fig. 2. FIGURE 1 FIGURE 2 (1) Note. This subclass contains, for example:

227	Guanyl hydrazines or hydrozones (i.e., HNH-N=C(-HNH)-HNH or HN=C(-HNH)-NH HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 226.  Compounds which are guanylhydrazines containing the grouping in Fig. 1 below, or guanylhydrazones containing the grouping in Fig. 2. FIGURE 1 FIGURE 2 (1) Note. This subclass contains, for example:

228	Benzene ring containing
	This subclass is indented under subclass 227.  Compounds which contain a benzene ring. (1) Note. This subclass contains, for example:

229	Amidoximes (i.e., HON=CH-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 225.  Compounds which are amidoximes containing the grouping below, wherein R may be H, an ester forming group or an ether forming group. (1) Note. This subclass contains, for example:

230	Guanidines (i.e., HN=C(-HNH)-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 225.  Compounds which are guanidines, containing the grouping (1) Note. This subclass contains, for example:

231	Preparing from thioureas
	This subclass is indented under subclass 230.  Processes wherein a guanidine is prepared from a thiourea, as for example, by reaction with ammonia or an amino nitrogen containing compound in the presence of a desulfurizing agent.

232	Preparing by reacting cyanogen halide with amino nitrogen containing compound
	This subclass is indented under subclass 230.  Processes wherein a guanidine is prepared by reaction of a cyanogen halide and an amino nitrogen containing compound, as for example:

233	Biguanides (i.e., HN=C(-HNH)-NH-(HNH-)C=NH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 230.  Compounds which are biguanides, containing the grouping (1) Note. This subclass contains, for example:

234	Benzene ring containing
	This subclass is indented under subclass 233.  Compounds wherein a biguanide contains a benzene ring. (1) Note. This subclass contains, for example:

235	Plural rings containing
	This subclass is indented under subclass 234.  Compounds wherein a biguanide contains more than one ring. (1) Note. This subclass contains, for example:

236	Polyguanidines
	This subclass is indented under subclass 230.  Compounds wherein there are at least two guanidine groups. (1) Note. This subclass contains, for example:

237	Benzene ring containing
	This subclass is indented under subclass 230.  Compounds wherein a guanidine contains a benzene ring. (1) Note. This subclass contains, for example:

238	Benzene ring bonded directly to guanidine nitrogen
	This subclass is indented under subclass 237.  Compounds wherein a guanidine contains a benzene ring bonded directly to a guanidine nitrogen. (1) Note. This subclass contains, for example:

239	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 238.  Compounds wherein a guanidine contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

240	Acyclic
	This subclass is indented under subclass 230.  Compounds wherein a guanidine does not contain a ring. (1) Note. This subclass contains, for example:

241	Guanidine per se or salt thereof
	This subclass is indented under subclass 240.  The compound which is guanidine or its salts and processes of preparation not provided for above.

242	Guanidine nitrate
	This subclass is indented under subclass 241.  The compound which is guanidine nitrate and processes of preparation not provided for above.

243	Polyamidines
	This subclass is indented under subclass 225.  Compounds wherein there is more than one amidine group. (1) Note. This subclass contains, for example:

244	Benzene ring containing
	This subclass is indented under subclass 225.  Compounds wherein an amidine contains a benzene ring. (1) Note. This subclass contains, for example:

245	N(prime)-aryl formimidines (i.e., benzene-N=CH-HNH, wherein substitution may be made for hydrogen, including those bonded directly to the benzene ring only)
	This subclass is indented under subclass 244.  Compounds which are N (prime)-aryl formamidines containing the grouping (1) Note. This subclass contains, for example:

246	Additional nitrogen attached indirectly to amidine nitrogen by nonionic bonding
	This subclass is indented under subclass 244.  Compounds wherein an amidine contains an additional nitrogen which is nonionically bonded. (1) Note. This subclass contains, for example:

247	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 244.  Compounds wherein an amidine contains a hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

248	Containing nitrogen double bonded directly to carbon
	This subclass is indented under subclass 1.  Compounds which are characterized by the presence of the grouping below and correspond in constitution to those formed by reacting an aldehyde or ketone with ammonia or an amino nitrogen containing compound. (1) Note. This subclass contains, for example:

249	Azines (i.e., HCH=N-N=HCH, wherein substitution may be made for hydrogen)
	This subclass is indented under subclass 248.  Compounds which are azines and contain the grouping below. (1) Note. This subclass contains, for example:

250	Hydrazones (i.e., HCH=N-HNH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 248.  Compounds which are hydrazones containing the grouping below. (1) Note. This subclass contains, for example:

251	Benzene ring containing
	This subclass is indented under subclass 250.  Compounds wherein the hydrazone contains a benzene ring. (1) Note. This subclass contains, for example:

252	Carbodiimides (i.e., HN=C=NH, wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 248.  Compounds which are carbodiimides containing the grouping below. (1) Note. This subclass contains, for example:

253	Oximes (HCH=N-OH, i.e., wherein substitution may be made for hydrogen only)
	This subclass is indented under subclass 248.  Compounds which are oximes containing the grouping below wherein X may be hydrogen, the carbon of an ether forming group or the residue of an ester forming compound not provided for above. (1) Note. This subclass contains, for example:

254	O-esters (i.e., H of oxime -OH replaced by ester forming group)
	This subclass is indented under subclass 253.  Compounds which are O-esters of oximes wherein X is the residue of an ester forming compound. (1) Note. This subclass contains, for example: SEE OR SEARCH THIS CLASS, SUBCLASS: 15, for phosphorus containing acid O-esters of oximes.

255	O-carbamoyl
	This subclass is indented under subclass 254.  Compounds wherein the residue of the ester forming group is that of a carbamic acid. (1) Note. This subclass contains, for example:

256	O-ethers (i.e., H of oxime -OH replaced by ether forming group)
	This subclass is indented under subclass 253.  Compounds which are O-ethers of oximes wherein X is the carbon of an ether forming group. (1) Note. This subclass contains, for example:

257	Polycyclo ring system
	This subclass is indented under subclass 256.  Compounds wherein the O-ether oxime contains a polycyclo ring system. (1) Note. This subclass contains, for example:

258	Oxygen double bonded, or hydroxy or ether oxygen bonded directly to an alpha carbon (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group Ia or IIA light metal)
	This subclass is indented under subclass 253.  Compounds wherein a carbon atom in a position alpha to the oxime group is substituted by a double-bonded oxygen or an -OX, wherein X may be H, C, or a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

259	Preparing directly by reacting carbonyl with hydroxylamine or salt thereof
	This subclass is indented under subclass 253.  Processes wherein an oxime is produced directly by reaction of an aldehyde or ketone with hydroxyl amine or a salt thereof.

260	Preparing directly by reducing nitronic acid salt
	This subclass is indented under subclass 253.  Processes wherein an oxime is produced directly by reduction of a nitronic acid salt, as for example, an alkali metal salt of a nitroparaffin.

261	Preparing directly by reducing nitro group
	This subclass is indented under subclass 253.  Processes wherein an oxime is produced directly by reduction of a nitro group, as for example, with hydrogen or carbon monoxide.

262	Preparing directly by oxidizing a hydroxyl amine
	This subclass is indented under subclass 253.  Processes wherein an oxime is produced directly by oxidation of a hydroxyl amine group.

263	Preparing directly by nitrosation of olefin
	This subclass is indented under subclass 253.  Processes wherein an oxime is produced directly by reaction of an olefinic compound with a nitrosating agent such as, for example, nitrous acid or nitrosyl chloride.

264	Purification or recovery
	This subclass is indented under subclass 253.  Processes which are directed to the purification, separation, or recovery of oximes.

265	Benzene ring containing
	This subclass is indented under subclass 253.  Compounds wherein an oxime contains a benzene ring. (1) Note. This subclass contains, for example:

266	The oxime carbon is acyclic and has two rings bonded directly thereto
	This subclass is indented under subclass 265.  Compounds wherein two rings are bonded directly to the carbon of an oxime group. (1) Note. This subclass contains, for example:

267	Six-membered alicyclic ring double bonded directly to the oxime nitrogen
	This subclass is indented under subclass 253.  Compounds wherein a carbon of a cyclohexyl group is bonded directly to the oxime nitrogen. (1) Note. This subclass contains, for example:

268	Acyclic
	This subclass is indented under subclass 253.  Compounds wherein an oxime does not contain a ring. (1) Note. This subclass contains, for example:

269	Nitrogen double bonded and two rings bonded directly to the same acyclic carbon (e.g., auramines, etc.)
	This subclass is indented under subclass 248.  Compounds wherein two rings are directly bonded to the same carbon which, in turn, is double bonded to an amino nitrogen, e.g., auramines. (1) Note. This subclass contains, for example:

270	Polycyclo ring system
	This subclass is indented under subclass 248.  Compounds wherein an aldimine or ketimine containing compound contains a polycyclo ring system. (1) Note. This subclass contains, for example:

271	Aldimines or ketimines which contain benzene ring (i.e., HCH=NH, wherein substitution may be made for hydrogen only but a hydrogen or carbon must be bonded directly to the carbon)
	This subclass is indented under subclass 248.  Compounds which are aldimines or ketimines and contain a benzene ring. (1) Note. This subclass contains, for example:

272	Benzylidene imines (i.e., Q-benzene-CH=NH, wherein Q is a substituent or hydrogen and substitution may be made for hydrogen only)
	This subclass is indented under subclass 271.  Compounds which are benzylideneimines containing the grouping below. (1) Note. This subclass contains, for example:

273	Substituent Q contains nitrogen bonded directly to carbon
	This subclass is indented under subclass 272.  Compounds wherein a substituent attached to the ring of the benzylidene group contains a nitrogen which is directly bonded to carbon. (1) Note. This subclass contains, for example:

274	Substituent Q contains hydroxy, bonded directly to carbon, or ether (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 272.  Compounds wherein a substituent attached to the ring of the benzylidene group contains an OH bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

275	Q is hydrogen only
	This subclass is indented under subclass 272.  Compounds wherein the benzene of the benzylidene group is unsubstituted. (1) Note. This subclass contains, for example:

276	Hydroxy, bonded diretly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 271.  Compounds wherein the aldimine or ketimine contains hydroxyl bonded directly to carbon, or an ether, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

277	Unsubstituted phenyl bonded directly to the aldimine or ketimine nitrogen
	This subclass is indented under subclass 271.  Compounds wherein an unsubstituted benzene is directly attached to the imino nitrogen. (1) Note. This subclass contains, for example:

278	Aldimines or ketimines which are acyclic
	This subclass is indented under subclass 248.  Compounds wherein an aldimine or ketimine does not contain a ring. (1) Note. This subclass contains, for example:

279	Carbon to carbon unsaturation containing
	This subclass is indented under subclass 278.  Compounds wherein the aldimine or ketimine contains a double or triple bond between two carbons. (1) Note. This subclass contains, for example:

280	Phenol or thiophenol addition salts
	This subclass is indented under subclass 1.  Compounds which are formed by addition of a phenol or thiophenol to an amino nitrogen containing compound, as for example: RNH2 . HOC6H5.

281	Quaternary ammonium containing
	This subclass is indented under subclass 1.  Compounds which are quaternary ammonium compounds wherein a pentavalent nitrogen is bonded by four valences to carbon. (1) Note. This subclass contains, for example:

282	Benzene ring containing
	This subclass is indented under subclass 281.  Compounds wherein the quaternary ammonium compound contains a benzene ring. (1) Note. This subclass contains, for example:

283	Two rings bonded directly to the same carbon
	This subclass is indented under subclass 282.  Compounds wherein the quaternary ammonium contains two rings bonded directly to the same carbon. (1) Note. This subclass contains, for example:

284	Nitro or nitroso, bonded directly to carbon containing
	This subclass is indented under subclass 282.  Compounds wherein the quaternary ammonium contains a nitro or nitroso group directly bonded to carbon. (1) Note. This subclass contains, for example:

285	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 282.  Compounds wherein the quaternary ammonium contains an OH bonded directly to carbon, or an ether group, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

286	Polyquaternary ammonium
	This subclass is indented under subclass 285.  Compounds which contain more than one quaternary ammonium group. (1) Note. This subclass contains, for example:

287	The hydroxy or ether oxygen is bonded directly to a ring
	This subclass is indented under subclass 285.  Compounds wherein the quaternary ammonium contains an -OX group bonded directly to a ring carbon, where X may be H, C, a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

288	Acyclic carbon to carbon unsaturation containing
	This subclass is indented under subclass 282.  Compounds wherein the quaternary ammonium contains a double or triple bond between two acyclic carbons. (1) Note. This subclass contains, for example:

289	Halogen attached indirectly to the ammonium nitrogen by nonionic bonding
	This subclass is indented under subclass 282.  Compounds wherein the quaternary ammonium contains nonionically bonded halogen. (1) Note. This subclass contains, for example:

290	Polyquaternary ammonium
	This subclass is indented under subclass 282.  Compounds which contain more than one quaternary ammonium group. (1) Note. This subclass contains, for example:

291	Acyclic
	This subclass is indented under subclass 281.  Compounds wherein a quaternary ammonium compound does not contain a ring. (1) Note. This subclass contains, for example:

292	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 291.  Compounds which contain an OH bonded directly to carbon, or an ether group, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

293	Choline, beta-alkylcholines, ethers thereof, and salts thereof
	This subclass is indented under subclass 292.  Compounds which are choline, beta-alkyl cholines, or ethers thereof and their salts having the structure below wherein X and Y are H or C. (1) Note. This subclass contains, for example:

294	Polyoxyalkylene
	This subclass is indented under subclass 292.  Compounds wherein a quaternary ammonium contains the grouping below where n and m are positive integers and m is greater than one. (1) Note. This subclass contains, for example:

295	Polyquaternary ammonium
	This subclass is indented under subclass 291.  Compounds which contain more than one quaternary ammounium group. (1) Note. This subclass contains, for example:

296	Processes
	This subclass is indented under subclass 291.  Processes for the preparation, purification, separation, or recovery of quaternary ammonium compounds classifiable only in that subclass.

297	Amine oxides
	This subclass is indented under subclass 1.  Compounds which are amine oxides characterized by the structure below. (1) Note. This subclass contains, for example:

298	Processes
	This subclass is indented under subclass 297.  Processes for the preparation, purification, separation, or recovery of amine oxides.

299	Benzene ring containing
	This subclass is indented under subclass 297.  Compounds wherein the amine oxide contains a benzene ring. (1) Note. This subclass contains, for example:

300	Nitroxides, oxyamines or hydroxylamines (i.e., HNH-O or HNH-OH, wherein substitution may be made for hydrogen only, including O-ether and O-ester derivatives)
	This subclass is indented under subclass 1.  Compounds which are nitroxides, free radicals, containing the structure in Fig. 1, or hydroxyl amines or their O-ethers or O- esters containing the structure in Fig. 2 wherein X is H, C, or the residue of an esterifying acid group. FIGURE 1 FIGURE 2 (1) Note. This subclass also contains compounds which are O-ethers wherein the amino nitrogen is unsubstituted. (2) Note. This subclass contains, for example:

301	Acyclic
	This subclass is indented under subclass 300.  Compounds which are nitroxides, hydroxylamines, or their O-ethers or O-esters which do not contain a ring. (1) Note. This subclass contains, for example:

302	Racemization per se or with resolution of optical isomers
	This subclass is indented under subclass 1.  Processes for the formation of a racemic mixture from an amino nitrogen containing enantiomer (optical isomer), per se, or together with the separation of the enantiomers of the racemic mixture.

303	Resolution per se of optical isomers
	This subclass is indented under subclass 1.  Processes which are directed to the resolution (separation) of optical isomers, which may be diastereomers or enantiomers.

304	Of benzene ring containing compounds
	This subclass is indented under subclass 303.  Processes wherein the optical isomers being separated contain a benzene ring.

305	Benzene ring containing
	This subclass is indented under subclass 1.  Compounds not provided for above, which contain a benzene ring. (1) Note. This is the residual subclass for aromatic amino nitrogen compounds not specifically provided for below. (2) Note. This subclass contains, for example:

306	Alicyclic ring or ring system, having plural amino nitrogens attached directly or indirectly thereto by acyclic nonionic bonding, attached indirectly to an aryl ring or ring system by acyclic nonionic bonding
	This subclass is indented under subclass 305.  Compounds wherein a benzene ring or benzene containing polycyclo is bonded to an alicyclic ring or ring system through a single atom or an acyclic chain and the alicyclic group contains more than one amino nitrogen attached to it either directly or through a single atom or acyclic chain. (1) Note. This subclass contains, for example:

307	Amino nitrogen and a ring bonded directly to the same ring, and any other amino nitrogen in the compound is bonded directly to one of the rings
	This subclass is indented under subclass 305.  Compounds wherein a benzene ring is bonded directly to another ring and one or more amino nitrogens are bonded directly only to either ring or both rings. (1) Note. This subclass contains, for example:

308	Polycyclo ring system
	This subclass is indented under subclass 307.  Compounds which contain a polycyclo ring system. (1) Note. This subclass contains, for example:

309	Benzidines
	This subclass is indented under subclass 307.  Compounds which are benzidines containing the grouping below. (1) Note. This subclass contains, for example:

310	Hydrazines
	This subclass is indented under subclass 305.  Compounds which are hydrazines containing the radical -NHNH- or its hydrogen substitution products. (1) Note. This subclass contains, for example:

311	Symmetrical diaryl hydrazines
	This subclass is indented under subclass 310.  Compounds wherein each nitrogen of the hydrazine radical is bonded directly to a benzene ring. (1) Note. This subclass contains, for example:

312	Preparing directly by reducing nitrogen containing group with metal and metallic hydroxide
	This subclass is indented under subclass 311.  Processes wherein the compound is formed by reducing a nitrogen containing group with metal and metallic hydroxide.

313	Aralkyl hydrazines
	This subclass is indented under subclass 310.  Compounds wherein an aralkyl group is bonded directly to the nitrogen of a hydrazine radical. (1) Note. This subclass contains, for example:

314	Processes
	This subclass is indented under subclass 310.  Processes for the preparation, purification, separation or recovery of a hydrazine group containing compound.

315	Two aryl rings or ring systems bonded directly to the same carbon
	This subclass is indented under subclass 305.  Compounds wherein two benzene rings or benzene containing polycyclos are bonded to the same carbon. (1) Note. This subclass contains, for example: SEE OR SEARCH CLASS: 552,  Organic Compounds,   subclasses 101+ for triarylmethyl compounds.

316	Amino nitrogen attached to the carbon by an acyclic carbon or chain
	This subclass is indented under subclass 315.  Compounds wherein an amino nitrogen is indirectly bonded to the inter aryl carbon through a single atom or an acyclic chain. (1) Note. This subclass contains, for example:

317	Oxygen or sulfur is bonded directly to the carbon and is part of the chain
	This subclass is indented under subclass 316.  Compounds wherein oxygen or sulfur is directly bonded to the inter aryl carbon and is part of the acyclic chain which contains the amino nitrogen. (1) Note. This subclass contains, for example:

318	Processes
	This subclass is indented under subclass 317.  Processes for the preparation, purification, separation or recovery of compounds classified in that subclass.

319	Oxygen, carbonyl or carbon to carbon unsaturation in the chain; or ether, carbonyl, carbon to carbon unsaturation or hydroxy, bonded directly to carbon, is part of a substituent bonded directly to the acyclic carbon or chain (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 361.  Compounds which contain oxygen, carbonyl, a double bond or a triple bond in the chain; or wherein ether, carbonyl, a double bond, a triple bond or a hydroxyl, which hydroxyl is bonded directly to carbon, is part of a substituent, which substituent is bonded directly to theacyclic carbon or chain, wherein the H of the - OH may be replaced by a substituted or unsubstituted ammoniom ion or a Group IA or IIA light metal.

320	Hydroxy or ether oxygen bonded directly to the carbon (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 316.  Compounds wherein an -OX is bonded directly to the inter aryl carbon where X may be H, C, a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

321	Amino nitrogen bonded directly to the carbon
	This subclass is indented under subclass 315.  Compounds wherein an amino nitrogen is bonded directly to the inter aryl carbon. (1) Note. This subclass contains, for example:

322	The carbon is a ring member of an alicyclic ring or ring system
	This subclass is indented under subclass 315.  Compounds wherein the inter aryl carbon is a ring member of an alicyclic ring or ring system. (1) Note. This subclass contains, for example:

323	Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain
	This subclass is indented under subclass 315.  Compounds wherein an amino nitrogen is indirectly attached to the benzene ring or benzene containing polycyclo through a single atom or an acyclic chain. (1) Note. This subclass contains, for example:

324	Oxygen or sulfur is bonded directly to the aryl ring or ring system and is part of the chain
	This subclass is indented under subclass 323.  Compounds wherein oxygen or sulfur bonded directly to the benzene ring or ring system is part of the acyclic chain which contains the amino nitrogen. (1) Note. This subclass contains, for example:

325	Additional similar chain
	This subclass is indented under subclass 324.  Compounds which contain more than one of the chains described therein. (1) Note. This subclass contains, for example:

326	Amino nitrogen is bonded directly to the aryl ring or ring system and is part of the chain
	This subclass is indented under subclass 323.  Compounds wherein an amino nitrogen bonded directly to the benzene ring or ring system is part of the acyclic chain which includes the indirectly attached amino nitrogen. (1) Note. This subclass contains, for example:

327	Benzhydrols or benzthiols (i.e., -OH or -SH bonded directly to the carbon)
	This subclass is indented under subclass 315.  Compounds which are benzhydrols or benzthiols wherein an -OH or -SH group is bonded directly to the inter aryl carbon. (1) Note. This subclass contains, for example:

328	Benzophenones or benzothiophenones (i.e., the carbon is part of a carbonyl or thiocarbonyl)
	This subclass is indented under subclass 315.  Compounds which are benzophenones or benzothiophenones wherein the inter aryl carbon is part of a carbonyl or thiocarbonyl group. (1) Note. This subclass contains, for example:

329	Processes
	This subclass is indented under subclass 328.  Processes for the preparation, purification, separation, recovery of benzophenones or benzothiophenones.

330	Diamino diphenyl methanes (i.e., two phenyls, each having amino nitrogen bonded directly thereto, bonded directly to the carbon)
	This subclass is indented under subclass 315.  Compounds wherein two phenyl groups, each having an amino nitrogen directly attached, are directly bonded to the same carbon (i.e., diamino diphenyl methanes). (1) Note. This subclass contains, for example:

331	Preparing by reacting carbonyl containing compound with amino nitrogen containing compound
	This subclass is indented under subclass 330.  Processes wherein an amino nitrogen containing compound is condensed with an aldehyde or ketone, as for example, the condensation of formaldehyde or acetone with aniline. (1) Note. This subclass contains, for example:

332	Solid catalyst utilized
	This subclass is indented under subclass 331.  Processes wherein the reaction is carried out in the presence of a solid catalyst.

333	Hydrochloric acid utilized
	This subclass is indented under subclass 331.  Processes wherein the reaction is carried out in the presence of hydrochloric acid.

334	Purification or recovery
	This subclass is indented under subclass 330.  Processes directed to the purification, separation, or recovery of diamino diphenyl methanes.

335	Halogen or sulfur attached directly or indirectly to the carbon by nonionic bonding
	This subclass is indented under subclass 330.  Compounds which contain halogen or sulfur nonionically bonded to carbon. (1) Note. This subclass contains, for example:

336	Amino nitrogen attached to aryl ring or ring system by an acyclic carbon or chain
	This subclass is indented under subclass 305.  Compounds wherein an amino nitrogen is indirectly bonded to an aryl ring or ring system through a single acyclic carbon or through an acyclic chain. (1) Note. This subclass contains, for example:

337	The aryl ring or ring system is bonded directly to another ring
	This subclass is indented under subclass 336.  Compounds wherein the aryl ring or ring system is bonded directly to another ring. (1) Note. This subclass contains, for example: SEE OR SEARCH THIS CLASS, SUBCLASS: 307, for compounds which contain two rings or ring systems bonded directly to each other and all amino nitrogens are bonded directly to a ring or ring system.

338	The other ring is alicyclic
	This subclass is indented under subclass 337.  Compounds wherein the other ring is alicyclic. (1) Note. This subclass contains, for example:

339	Double bonded oxygen, ether or hydroxy, bonded directly to carbon, is attached directly or indirectly to the alicyclic ring by acyclic nonionic bonding (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 338.  Compounds wherein the alicyclic ring contains an -OH bonded to carbon wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal or an ether or carbonyl group.

340	Sulfur is part of the chain or is attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the sulfur and the aryl ring or ring system
	This subclass is indented under subclass 336.  Compounds wherein the chain contains sulfur or has an acyclic sulfur substituent and there is no amino nitrogen between the sulfur and the ring. (1) Note. This subclass contains, for example:

341	The sulfur is bonded directly to the aryl ring or ring system
	This subclass is indented under subclass 340.  Compounds wherein the sulfur is part of the chain and is bonded directly to the aryl ring or ring system. (1) Note. This subclass contains, for example:

342	Carbonyl is part of the chain or is attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the carbonyl and the aryl ring or ring system
	This subclass is indented under subclass 336.  Compounds wherein the chain contains a carbonyl or has an acyclic carbonyl substituent and there is no amino nitrogen between the carbonyl and the ring or ring system. (1) Note. This subclass contains, for example:

343	Processes
	This subclass is indented under subclass 342.  Processes for the preparation, purification, separation, or recovery of compounds defined therein and in its dependent subclasses.

344	Hydroxy or ether oxygen bonded directly to the aryl ring or ring system
	This subclass is indented under subclass 342.  Compounds wherein the aryl ring or ring system contains an -OX group bonded directly to a ring carbon and X may be H or C or a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

345	Halogen bonded directly to the aryl ring or ring system
	This subclass is indented under subclass 342.  Compounds wherein the aryl ring or ring system contains halogen bonded directly to a ring carbon. (1) Note. This subclass contains, for example:

346	Ether oxygen is part of the chain
	This subclass is indented under subclass 336.  Compounds wherein oxygen is part of the chain. (1) Note. This subclass contains, for example:

347	The ether oxygen is bonded directly to the aryl ring or ring system
	This subclass is indented under subclass 346.  Compounds wherein oxygen which is part of the chain is bonded directly to the aryl ring or ring system. (1) Note. This subclass contains, for example:

348	Hydroxy, bonded directly to carbon, or ether oxygen is attached directly or indirectly to the chain by acyclic nonionic bonding with no amino nitrogen between the hydroxy or attached ether oxygen and the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 347.  Compounds wherein the chain contains an - OH bonded to carbon wherein the H of the - OH may be replaced by a substituted or unsubstituted ammonium ion by a Group IA or IIA light metal or an ether group as substituted and there in no amino nitrogen between this group and the ring or ring system. (1) Note. This subclass contains, for example:

349	Alkanol group only between the amino nitrogen and the ether oxygen which is bonded directly to the aryl ring or ring system (i.e., aryloxy alkanol amines)
	This subclass is indented under subclass 348.  Compounds which are phenoxy alkanol amines wherein the additional substituent is a hydroxyl group bonded directly to a chain carbon between the amino nitrogen and the aryl ring or ring system. (1) Note. This subclass contains, for example:

350	Nitrogen bonded directly to the aryl ring or ring system
	This subclass is indented under subclass 349.  Compounds wherein the nitrogen is bonded directly to a ring carbon of the aryl ring or ring system. (1) Note. This subclass contains, for example:

351	Halogen bonded directly to the aryl ring oring system
	This subclass is indented under subclass 349.  Compounds wherein halogen is bonded directly to a ring carbon of the aryl ring or ring system. (1) Note. This subclass contains, for example:

352	The aryl ring or ring system is polycyclo
	This subclass is indented under subclass 347.  Compounds wherein the ring system is polycyclo. (1) Note. This subclass contains, for example:

353	Hydrogen or acyclic hydrocarbyl substituents only bonded directly to the part of the chain between the ether oxygen and amino nitrogen
	This subclass is indented under subclass 347.  Compounds wherein the part of the chain between the amino nitrogen and oxygen is unsubstituted or substituted by acyclic hydrocarbon groups. (1) Note. This subclass contains, for example:

354	The part of the chain between the ether oxygen and amino nitrogen consists of two unsubstituted saturated carbons
	This subclass is indented under subclass 353.  Compounds which are aryloxyethlamines, wherein the part of the chain between the amino nitrogen and the oxygen contains two carbons and is unsubstituted. (1) Note. This subclass contains, for example:

355	Hydroxy, bonded directly to carbon, or ether oxygen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the hydroxy or ether oxygen and the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 336.  Compounds which contain hydroxyl, which is bonded directly to carbon, or an ether oxygen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding, with no amino nitrogen between the hydroxyl or ether oxygen and the aryl ring or ring system, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

356	Preparing directly by reduction, other than by reductive amination
	This subclass is indented under subclass 355.  Processes wherein the compounds are prepared directly by reduction. (1) Note. For processes of reductive amination, see the appropriate compound subclass.

357	By direct hydrogenation
	This subclass is indented under subclass 356.  Processes wherein the reduction is by direct hydrogenation.

358	Group VIII noble metal containing catalyst utilized
	This subclass is indented under subclass 357.  Processes wherein a Group VIII noble metal containing catalyst is utilized in the hydrogenation.

359	Preparing directly by hydrolysis
	This subclass is indented under subclass 355.  Processes wherein the compounds are prepared directly by hydrolysis, as for examples of an amide.

360	Additional hydroxy, bonded directly to carbon, or ether oxygen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the additional hydroxy or ether oxygen and the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstitited ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 355.  Compounds wherein an additional hydroxyl or an ether wherein the H of the - OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal is bonded to the carbon or the chain between the amino nitrogen and the aryl ring or ring system. (1) Note. This subclass contains, for example:

361	Plural hydroxy groups bonded directly to the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 355.  Compounds wherein the aryl ring or ring system has more than one hydroxy group wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal bonded directly to a ring carbon. (1) Note. This subclass contains, for example:

362	Four or more substituents on the aryl ring or ring system
	This subclass is indented under subclass 361.  Compounds wherein the aryl ring or ring system contains at least four substituents bonded directly to ring carbons. (1) Note. This subclass contains, for example:

363	Beta hydroxy phenethylamines (i.e., hydroxy and the benzene ring are bonded directly to the same carbon of the chain which consists of two carbons; H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 355.  Compounds which are beta - OX phenethylamines wherein the chain contains two carbon atoms and a benzene ring and - OX group are bonded directly to the carbon beta to the amino nitrogen, wherein the X may be H, a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

364	Acyclic hydrocarbyl alpha substituent
	This subclass is indented under subclass 363.  Compounds wherein there is an acyclic hydrocarbyl substituent bonded directly to the chain carbon which is in a position alpha to the amino nitrogen. (1) Note. This subclass contains, for example:

365	Hydroxy or ether oxygen bonded directly to the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 363.  Compounds wherein the aryl ring or ring system contains an -OX group bonded directly to a ring carbon where X is H, C, a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

366	Halogen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the halogen and the aryl ring or ring system
	This subclass is indented under subclass 336.  Compounds wherein a halogen is attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding, and there is no amino nitrogen between the halogen and the aryl ring or ring system.

367	The chain contains nitrogen between the aryl ring or ring system and amino nitrogen
	This subclass is indented under subclass 336.  Compounds wherein an additional amino nitrogen is part of the chain between the amino nitrogen and the aryl ring or ring system. (1) Note. This subclass contains, for example:

368	Ethylene diamines
	This subclass is indented under subclass 367.  Compounds wherein the chain contains an ethylene diamine group wherein the ethylene carbons may be substituted by alkyl substituents only. (1) Note. This subclass contains, for example:

369	Mono ethylene diamines
	This subclass is indented under subclass 368.  Compounds wherein there is only one ethylene diamine group. (1) Note. This subclass contains, for example:

370	Plural aryl rings, which are not part of the same polycyclo ring system, or ring systems containing
	This subclass is indented under subclass 369.  Compounds wherein there are plural discrete benzene ring or ring systems. (1) Note. This subclass contains, for example:

371	Methylene diamines
	This subclass is indented under subclass 367.  Compounds wherein the chain contains a methylene diamine group. (1) Note. This subclass contains, for example:

372	Additional amino nitrogen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding
	This subclass is indented under subclass 336.  Compounds wherein an additional nonionic amino nitrogen is bonded to the carbon or the chain either directly or as part of an acyclic substituent. (1) Note. This subclass contains, for example:

373	Alpha aralkyl benzyl amines
	This subclass is indented under subclass 336.  Compounds wherein an aralkyl group is bonded directly to the alpha carbon of a benzyl amine. (1) Note. This subclass contains, for example:

374	The chain consists of two or more carbons which are unsubstituted or have acyclic hydrocarbyl substituents only
	This subclass is indented under subclass 336.  Compounds wherein the chain consists of two or more carbons which are unsubstituted or substituted by acyclic hydrocarbon groups. (1) Note. This subclass contains, for example:

375	Forming amine group directly by reduction, other than by reductive amination
	This subclass is indented under subclass 374.  Processes wherein the amine group is formed directly by reduction. (1) Note. For processes of reductive amination, see the appropriate product subclass.

376	Forming directly by amination which replaces halogen
	This subclass is indented under subclass 374.  Processes wherein the compounds are formed by amination by replacing a halogen by an amino nitrogen or ammonia.

377	Preparing directly by hydrolysis
	This subclass is indented under subclass 374.  Processes wherein the compounds are prepared directly by hydrolysis.

378	The aryl ring or ring system is polycyclo
	This subclass is indented under subclass 374.  Compounds wherein the aryl ring system is a polycyclo ring system. (1) Note. This subclass contains, for example:

379	Tricyclo ring system
	This subclass is indented under subclass 378.  Compounds wherein the polycyclo ring system is tricyclo. (1) Note. This subclass contains, for example:

380	The chain contains carbon to carbon unsaturation
	This subclass is indented under subclass 379.  Compounds wherein the chain contains a double or triple bond between two carbons. (1) Note. This subclass contains, for example:

381	Phenethylamines having alpha alkyl substituent
	This subclass is indented under subclass 374.  Compounds which are phenethylamines, having two carbons in the chain between the amino nitrogen and a benzene ring and an alkyl substituent on the carbon alpha to the amino nitrogen. (1) Note. This subclass contains, for example:

382	Phenethylamines having beta alkyl substituent
	This subclass is indented under subclass 374.  Compounds which are phenethylamines, having two carbons in the chain between the amine nitrogen and a benzene ring and an alkyl substituent on the carbon beta to the amino nitrogen. (1) Note. This subclass contains, for example:

383	The chain contains carbon to carbon unsaturation
	This subclass is indented under subclass 374.  Compounds wherein the chain contains a double or triple bond between two carbons. (1) Note. This subclass contains, for example:

384	The aryl ring or ring system and amino nitrogen are bonded directly to the same acyclic carbon, which carbon additionally has only hydrogen or acyclic hydrocarbyl substituents bonded directly thereto
	This subclass is indented under subclass 336.  Compounds wherein an aryl ring or ring system and an amino nitrogen are both directly bonded to the same acyclic carbon, which carbon additionally has only hydrogen or acyclic hydrocarbyl substituents bonded directly thereto. (1) Note. This subclass contains, for example:

385	Forming amine group directly by reduction, other than by reductive amination
	This subclass is indented under subclass 384.  Processes wherein the amine group is formed directly by reduction. (1) Note. For processes of reductive amination, see the appropriate product subclass.

386	Forming directly by amination which replaces halogen or forming amine group directly by hydrolysis
	This subclass is indented under subclass 384.  Processes wherein the compounds are formed directly by an amination process by replacing a halogen by an amino nitrogen or ammonia or wherein the compounds are formed directly by hydrolysis.

387	The aryl ring or ring system is polycyclo
	This subclass is indented under subclass 384.  Compounds wherein the aryl ring system is a polycyclo ring system. (1) Note. This subclass contains, for example:

388	Plural amino methylene groups bonded directly to the same benzene ring
	This subclass is indented under subclass 384.  Compounds wherein each of at least two amino nethylene groups are bonded directly to a benzene ring carbon. (1) Note. This subclass contains, for example:

389	Benzyl amines having hydroxy or ether oxygen bonded directly to the benzene ring (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 384.  Compounds wherein the aryl ring has an -OX bonded directly to a ring carbon and X is H or C, or a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

390	Ortho hydroxy benzyl amines
	This subclass is indented under subclass 389.  Compounds which are ortho hydroxy benzylamines. (1) Note. This subclass contains, for example:

391	Benzyl amines wherein the benzene ring has no other substituents
	This subclass is indented under subclass 384.  Compounds which are benzylamines where the benzene ring has no other substituent. (1) Note. This subclass contains, for example:

392	Acyclic hydrocarbyl group bonded directly to the methylene carbon
	This subclass is indented under subclass 391.  Compounds wherein an acyclic hydrocarbyl group is bonded directly to the methylene carbon. (1) Note. This subclass contains, for example:

393	Preparing directly from ester other than by reduction of nitrile
	This subclass is indented under subclass 305.  Processes wherein a benzene containing amino nitrogen compound is prepared directly from an ester. SEE OR SEARCH THIS CLASS, SUBCLASS: 415, for preparation of an aromatic amine by reduction of a nitrile.

394	Preparing directly from organic acid, acid halide or salt
	This subclass is indented under subclass 305.  Processes wherein abenzene containing amino nitrogen compound is prepared directly from an organic acid, acid halide, or salt.

395	Preparing directly by amination
	This subclass is indented under subclass 305.  Processes wherein a benzene containing amine nitrogen compound is prepared directly by reacting an organic compound with ammonia or an amino nitrogen containing compound replacing a hydrogen thereof or another organic radical bonded to nitrogen to form a carbon to nitrogen bond. SEE OR SEARCH THIS CLASS, SUBCLASS: 429, and 435, for the formation of a secondary amine by condensation of two primary amines with elimination of ammonia.

396	Of carbonyl containing compound
	This subclass is indented under subclass 395.  Processes wherein an aldehyde or ketone compound is aminated.

397	By reductive amination
	This subclass is indented under subclass 396.  Processes wherein an aldehyde or ketone is aminated to form an aldimine or ketimine which is then reduced to an amino nitrogen form. (1) Note. For the purposes of this classification, this subclass has combined patents which claim the reductive amination in two distinct steps as well as those where the aldimine or ketimine formation and reduction are performed in a single step. (2) Note. For processes which recite only the reduction of an aldimine or ketimine, see subclass 415.

398	Group VIII noble metal containing catalyst utilized
	This subclass is indented under subclass 397.  Processes which utilize a Group VIII noble metal containing catalyst in a reductive amination process.

399	Of ether or alkylene oxide
	This subclass is indented under subclass 395.  Processes wherein the compound aminated is an ether or an alkylene oxide.

400	Of halohydrin
	This subclass is indented under subclass 395.  Processes wherein the compound aminated is a halohydrin.

401	Of acyclic hydroxy containing compound
	This subclass is indented under subclass 395.  Processes wherein the compound aminated is an acyclic alcohol.

402	By replacing hydroxy
	This subclass is indented under subclass 395.  Processes wherein a hydroxyl is replaced in the amination reaction.

403	In compound having plural hydroxys bonded directly to benzene ring
	This subclass is indented under subclass 402.  Processes wherein the compound aminated contains two or more hydroxyl groups bonded directly to a benzene ring.

404	Of halogen containing compound
	This subclass is indented under subclass 395.  Processes wherein the compound which is aminated contains halogen bonded direclty to carbon.

405	Which also contains benzene ring
	This subclass is indented under subclass 404.  Processes wherein the halogen containing compound contains a benzene ring.

406	And nitro
	This subclass is indented under subclass 405.  Processes wherein the compound aminated also contais a nitro group bonded directly to carbon.

407	Preparing primary amines
	This subclass is indented under subclass 405.  Processes wherein a primary amine is formed.

408	Of hydrocarbon
	This subclass is indented under subclass 395.  Processes wherein the compound aminated is a hydrocarbon.

409	Preparing directly by ring alkylation or dealkylaton
	This subclass is indented under subclass 305.  Processes wherein an alkyl side chain is directly introduced to a ring or directly removed from a ring.

410	Preparing directly by nitrosation
	This subclass is indented under subclass 305.  Processes of directly introducing a nitroso group bonded to a carbon.

411	Preparing directly by nitration
	This subclass is indented under subclass 305.  Processes of directly introducing a nitro group bonded to carbon.

412	Preparing of halogen containing compound directly by halogenation or dehalogenation
	This subclass is indented under subclass 305.  Processes wherein a halogenated benzene containing amino nitrogen compound is prepared directly by halogenating or dehalogenating.

413	Preparing directly from hetero ring containing compound
	This subclass is indented under subclass 305.  Processes wherein the compounds are prepared directly from a heterocyclic compound.

414	Preparing directly from an amide (e.g., preparing directly from a sulfenamide, nitrosamine, carboxamide, thiourea, etc.)
	This subclass is indented under subclass 305.  Processes wherein the compounds are prepared directly from an amide.

415	Forming amine group directly by reduction
	This subclass is indented under subclass 305.  Processes wherein an amine group is formed directly by reducing a nitrogen containing group.

416	Of nitro or nitroso
	This subclass is indented under subclass 415.  Processes wherein the group which is reduced is a nitro or nitroso.

417	Preparing compound which contains halogen bonded directly to carbon
	This subclass is indented under subclass 416.  Processes wherein the compound produced by reduction of the nitro or nitroso group contains halogen directly bonded to carbon.

418	Preparing compound which contains hydroxy, bonded directly to carbon, or ether
	This subclass is indented under subclass 416.  Processes wherein the compound produced by reduction of a nitro or nitroso group contains a hydroxyl bonded to carbon or an ether group.

419	With initial nitration step
	This subclass is indented under subclass 416.  Processes wherein the compounds are produced by first nitrating and then reducing the nitro group.

420	By direct hydrogenation
	This subclass is indented under subclass 416.  Processes wherein the nitro or nitroso group is reduced by addition of hydrogen.

421	Group VI metal containing catalyst utilized
	This subclass is indented under subclass 420.  Processes wherein a Group VI metal containing catalyst is utilized in the hydrogenation.

422	Group VIII metal containing catalyst utilized
	This subclass is indented under subclass 420.  Processes wherein a Group VIII metal containing catalyst is utilized in the hydrogenation.

423	Group VIII noble metal containing catalyst utilized
	This subclass is indented under subclass 422.  Processes wherein a Group VIII noble metal containing catalyst is utilized in the hydrogenation.

424	Separating isomers
	This subclass is indented under subclass 305.  Processes which are directed to the separation of isomers. SEE OR SEARCH THIS CLASS, SUBCLASS: 302, and 304, for the separation of optical benzene containing isomers.

425	By salt formation
	This subclass is indented under subclass 424.  Processes wherein the separation of the isomers is effected by salt formation.

426	Polycyclo ring system
	This subclass is indented under subclass 305.  Compounds which contains a polycyclo ring system. (1) Note. This subclass contains, for example:

427	Tricyclo ring system
	This subclass is indented under subclass 426.  Compounds wherein the polycyclo ring system is a tricyclo. (1) Note. This subclass contains, for example:

428	Bicyclo ring system
	This subclass is indented under subclass 426.  Compounds wherein the polycyclo ring system is bicyclo. (1) Note. This subclass contains, for example:

429	Naphthyl ring system and benzene ring bonded directly to the same nitrogen
	This subclass is indented under subclass 428.  Compounds wherein a naphthyl group and a benzene are both bonded directly to the same nitrogen. (1) Note. This subclass contains, for example:

430	Two benzene rings bonded directly to the same oxygen, sulfur, or polysulfide chain
	This subclass is indented under subclass 305.  Compounds which are diphenyl ethers or diphenyl sulfides wherein both benzene rings are bonded directly to oxygen, sulfur, or a polysulfide group. (1) Note. This subclass contains, for example:

431	Two carbocyclic rings, at least one of which is benzene, bonded directly to the same nitrogen
	This subclass is indented under subclass 305.  Compounds wherein two rings at least one of which is benzene are bonded directly to the same nitrogen. (1) Note. This subclass contains, for example:

432	Condensation products and processes of acyclic ketone and compound which contains two benzene rings bonded directly to the same nitrogen
	This subclass is indented under subclass 431.  Compounds and processes for preparing them wherein an acyclic ketone is condensed with a diarylamine.

433	Two benzene rings bonded directly to the same nitrogen
	This subclass is indented under subclass 431.  Compounds which are diphenylamines wherein two benzene rings are bonded directly to the same nitrogen. (1) Note. This subclass contains, for example:

434	Additional amino nitrogen containing
	This subclass is indented under subclass 433.  Compounds which contain an additional amino nitrogen. (1) Note. This subclass contains, for example:

435	Preparing directly by condensing a primary amine
	This subclass is indented under subclass 433.  Processes wherein the compounds classified therein are produced by the condensation of a primary amine.

437	Purification or recovery
	This subclass is indented under subclass 305.  Processes directed to the purification, separation, or recovery of moncyclic amine nitrogen containing compounds. SEE OR SEARCH THIS CLASS, SUBCLASS: 424+, for the separation of isomers.

438	By salt formation
	This subclass is indented under subclass 437.  Processes which utilize a salt formation prior to purifying, separating, or recovering.

439	Of compound having amino nitrogen and hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 437.  Processes for the purification, separation or recovery of compounds having an amino group and a hydroxyl bonded directly to the benzene ring, wherein the H of the -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal (i.e., aminophenols).

440	Sulfur attached indirectly to the amino nitrogen by nonionic bonding
	This subclass is indented under subclass 305.  Compounds which contain sulfur nonionically bonded. (1) Note. This subclass contains, for example:

441	Nitro or nitroso, bonded directly to carbon, containing
	This subclass is indented under subclass 305.  Compounds which contain a nitro or nitorso group bonded directly to carbon. (1) Note. This subclass contains, for example:

442	Halogen, bonded directly to carbon, containing
	This subclass is indented under subclass 305.  Compounds which contain halogen bonded directly to carbon. (1) Note. This subclass contains, for example:

443	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 305.  Compounds which contain a hydroxyl bonded directly to carbon or an ether group, wherein the H or the -OH may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

444	Preparing alicyclic ring containing compound directly by isomerization
	This subclass is indented under subclass 1.  Processes wherein an amino nitrogen containing alicyclic compound is prepared directly by isomerization.

445	Preparing alicyclic ring containing compound directly by amination
	This subclass is indented under subclass 1.  Processes wherein amino nitrogen containing alicyclic compounds are produced by reacting an organic compound with ammonia or an amine to replace an unreacted hydrogen or another organic radical bonded to nitrogen to form a carbon to nitrogen bond.

446	Of aldehyde or ketone containing compound
	This subclass is indented under subclass 445.  Processes wherein the compound reacted is an aldehyde or ketone.

447	Of hydroxy containing compound
	This subclass is indented under subclass 445.  Processes wherein the compound reacted is one containing a hydroxyl bonded to a noncarbonylic carbon.

448	Forming amine group of alicyclic ring containing compound directly by reduction
	This subclass is indented under subclass 1.  Processes wherein an amino nitrogen containing alicyclic compound is formed directly by reduction of a nitrogen containing group.

449	Including hydrogenating benzene ring
	This subclass is indented under subclass 448.  Processes which include the hydrogenation of a benzene ring.

450	Preparing alicyclic ring containing compound directly by hydrogenating benzene ring
	This subclass is indented under subclass 1.  Processes wherein an amine nitrogen containing alicyclic compound is prepared directly by hydrogenation of a benzene ring.

451	Plural amino nitrogens containing
	This subclass is indented under subclass 450.  Processes wherein the compound prepared contains more than one amine nitrogen.

452	Plural alicyclic rings, which are not part of the same polycyclo ring system, or ring systems bonded directly to the same carbon
	This subclass is indented under subclass 1.  Compounds wherein two discrete alicyclic rings or ring systems are bonded directly to the same carbon. (1) Note. This subclass contains, for example:

453	Alicyclic ring or ring system and amino nitrogen are attached indirectly by an acyclic carbon or chain
	This subclass is indented under subclass 1.  Compounds wherein an amino nitrogen is indirectly bonded to an alicyclic ring or ring system through a single acyclic carbon or through an acyclic chain. (1) Note. This subclass contains, for example:

454	The chain consists of two or more carbons which are unsubstituted or have acyclic hydrocarbyl substituents only
	This subclass is indented under subclass 453.  Compounds wherein the chain contains at least two carbons and is either unsubstituted or substituted only by acyclic hydrocarbon groups. (1) Note. This subclass contains, for example:

455	The alicyclic ring and amino nitrogen are bonded directly to the same acyclic carbon, which carbon additionally has only hydrogen or acyclic hydrocarbyl substituents bonded directly thereto
	This subclass is indented under subclass 453.  Compounds wherein the amino nitrogen is indirectly bonded to the alicyclic ring or ring system through a single acyclic carbon which is unsubstituted or may be substituted by acyclic hydrocarbon groups. (1) Note. This subclass contains, for example:

456	Polycyclo ring system
	This subclass is indented under subclass 455.  Compounds wherein the alicyclic ring system is a polycyclo. (1) Note. This subclass contains, for example:

457	Plural alicyclic rings
	This subclass is indented under subclass 1.  Compounds wherein there is more than one alicyclic ring. (1) Note. This subclass contains, for example:

458	Polycyclo ring system
	This subclass is indented under subclass 457.  Compounds wherein the plural rings are in the form of a polycyclo ring system. (1) Note. This subclass contains, for example:

459	Tricyclo ring system
	This subclass is indented under subclass 458.  Compounds wherein the polycyclo ring system is a tricyclo. (1) Note. This subclass contains, for example:

460	Bicyclo ring system
	This subclass is indented under subclass 458.  Compounds wherein the polycyclo ring system is bicyclo. (1) Note. This subclass contains, for example:

461	Alicyclic ring and plural amino nitrogens containing
	This subclass is indented under subclass 1.  Compounds which contain an alicyclic ring an more than one amino nitrogen. (1) Note. This subclass contains, for example:

462	Cyclohexyl ring containing
	This subclass is indented under subclass 1.  Compounds which contain a cyclohexyl ring. (1) Note. This subclass contains, for example:

463	Acyclic
	This subclass is indented under subclass 1.  Compounds which contain no ring. (1) Note. This subclass contains, for example:

464	Aminimine or hydrazine containing
	This subclass is indented under subclass 463.  Compounds which contain a hydrazine group -NHNH- or its hydrogen substitution products; or aminimines containing the grouping below. (1) Note. This subclass contains, for example:

465	Preparing directly by reducing a nitrosamine
	This subclass is indented under subclass 464.  Processes wherein the compounds are prepared directly by reducing a nitrosamine.

466	Preparing directly by condensing a haloamine
	This subclass is indented under subclass 464.  Processes wherein the compounds are produced by the condensation of a haloamine.

467	Preparing directly utilizing carbon monoxide
	This subclass is indented under subclass 463.  Processes wherein the compounds are prepared by the direct utilization of carbon monoxide.

468	Preparing directly from ester, organic acid or salt, other than by reduction of nitrile
	This subclass is indented under subclass 463.  Processes wherein the compounds are prepared directly from an ester or an organic acid or salt. SEE OR SEARCH THIS CLASS, SUBCLASS: 490+, for the reduction of a nitrile to form an amino nitrogen compound.

469	Preparing directly by amination
	This subclass is indented under subclass 463.  Processes wherein an acyclic amino nitrogen compound is prepared directly by reacting an organic compound with ammonia or an amino nitrogen containing compound replacing an hydrogen thereof or another organic radical bonded to nitrogen to form a carbon to nitrogen bond.

470	By transamination
	This subclass is indented under subclass 469.  Processes wherein a radical bonded to amino nitrogen by a carbon to nitrogen bond is replaced by a different radical similarly bonded to another amino nitrogen or another radical to form a carbon to nitrogen bond.

471	Of aldehyde or ketone containing compound
	This subclass is indented under subclass 469.  Processes wherein the organic compound reacted is an aldehyde or ketone.

472	By reductive amination
	This subclass is indented under subclass 471.  Processes wherein the aldehyde or ketone is aminated to form an aldimine or ketimine which is then reduced to an amino nitrogen form. (1) Note. This subclass contains patents which claim the reductive amination in two distinct steps as well as those wherein the aldimine or ketimine formation and reduction are performed in a single step. SEE OR SEARCH THIS CLASS, SUBCLASS: 489, for processes which recite only the reduction of an aldimine or ketimine.

473	Of aldehyde containing compound
	This subclass is indented under subclass 472.  Processes wherein an aldehyde is subjected to reductive amination.

474	Of ether containing compound
	This subclass is indented under subclass 469.  Processes wherein the organic compound contains an ether group.

475	Of an alkylene oxide
	This subclass is indented under subclass 474.  Processes wherein the organic compound is an alkylene oxide.

476	Of an epihalohydrin
	This subclass is indented under subclass 475.  Processes wherein the organic compound is an epihalohydrin.

477	Producing monohydroxy alkyl amines
	This subclass is indented under subclass 475.  Processes wherein the compounds produced are monohydroxy alkyl amines (i.e., HO-alkyl)x-N-(H)3-x).

478	Of hydroxy containing compound
	This subclass is indented under subclass 469.  Processes wherein the organic compound contains a hydroxyl bonded to carbon.

479	Catalyst utilized
	This subclass is indented under subclass 478.  Processes wherein a catalyst is utilized.

480	Group VI or VIII metal containing catalyst utilized
	This subclass is indented under subclass 479.  Processes wherein the catalyst is a Group VI or Group VIII metal containing compound.

481	Of halogen containing compound
	This subclass is indented under subclass 469.  Processes wherein the organic compound contains halogen bonded directly to carbon.

482	Of an alkylene dihalide
	This subclass is indented under subclass 481.  Processes wherein the organic compound is an alkylene dihalide.

483	Of compound which contains an atom other than carbon, hydrogen, and halogen
	This subclass is indented under subclass 481.  Processes wherein the organic compound contains a nonionically bonded element other than carbon, hydrogen, or halogen and not provided for above.

484	Of compound which contains carbon to carbon unsaturation
	This subclass is indented under subclass 481.  Processes wherein the organic compound also contains a double or triple bond between two carbons.

485	Of compound which contains carbon to carbon unsaturation
	This subclass is indented under subclass 469.  Processes wherein the organic compound contains a double or triple bond between two carbons.

486	Preparing directly by dealkylation
	This subclass is indented under subclass 463.  Processes wherein an organic radical bonded directly to an amino nitrogen through carbon is replaced directly by hydrogen.

487	Preparing directly from hetero ring containing compound
	This subclass is indented under subclass 463.  Processes wherein the compounds are produced directly from a heterocyclic compound.

488	Preparing directly from an amide (e.g., preparing directly from a carboxamide, etc.)
	This subclass is indented under subclass 463.  Processes wherein the compounds are produced directly from an amide such as, for example, a carboxamide or a sulfonamide.

489	Forming amine group directly by reduction
	This subclass is indented under subclass 463.  Processes wherein the amine group is formed directly by reduction of a nitrogen containing group.

490	Of cyano
	This subclass is indented under subclass 489.  Processes wherein the group reduced is a cyano group. (1) Note. The formation of secondary or tertiary amines by reduction of a nitrile is placed in this subclass.

491	Of plural cyanos
	This subclass is indented under subclass 490.  Processes wherein more than one cyano group is reduced.

492	Preparing hexamethylene diamine
	This subclass is indented under subclass 491.  Processes wherein hexamethylene diamine is produced.

493	Preparing a primary monoamine
	This subclass is indented under subclass 490.  Processes wherein a primary mono amine is produced.

494	Of nitro or nitroso
	This subclass is indented under subclass 489.  Processes wherein the nitrogen containing group which is reduced is a nitro or nitroso group.

495	The nitro or nitroso is in a compound which contains hydroxy, bonded directly to carbon, or ether
	This subclass is indented under subclass 494.  Processes wherein a compound containing a nitro or nitroso group which is reduced also contains a hydroxyl group bonded directly to carbon or an ether group.

496	Preparing directly by halogenation
	This subclass is indented under subclass 463.  Processes wherein the acyclic amino nitrogen compounds are produced by introducing halogen to form a direct bond to carbon.

497	Purification or recovery
	This subclass is indented under subclass 463.  Processes directed to the purification, separation, or recovery of acyclic amino nitrogen containing compounds.

498	Of an alkylene polyamine
	This subclass is indented under subclass 497.  Processes wherein the compounds prepared are alkylene polyamines.

499	Separating primary, secondary, or tertiary amines from each other
	This subclass is indented under subclass 497.  Processes wherein mixtures of primary, secondary, or tertiary amines are separated from each other.

500	Sulfur attached indirectly to the amino nitrogen by nonionic bonding
	This subclass is indented under subclass 463.  Compounds which contain nonionically bonded sulfur. (1) Note. This subclass contains, for example:

501	Thioether containing
	This subclass is indented under subclass 500.  Compounds wherein the sulfur is present in the form of a thioether. (1) Note. This subclass contains, for example:

502	Aldehyde or ketone containing
	This subclass is indented under subclass 463.  Compounds which contain an aldehyde or ketone group. (1) Note. This subclass contains, for example:

503	Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 463.  Compounds which contain a hydroxyl group bonded directly to carbon, or an ether, wherein the H of the -OH Group may be replaced by a substituted or unsubstituted ammonium ion or by a Group IA or IIA light metal. (1) Note. This subclass contains, for example:

504	Polyether
	This subclass is indented under subclass 503.  Compounds which contain more than one ether group. (1) Note. This subclass contains, for example:

505	Polyoxyalkylene
	This subclass is indented under subclass 504.  Compounds which contain the grouping -O- (CnH2nO)m where m and n are positive integers and m is greater than one. (1) Note. This subclass contains, for example: H37 C18 - O - ( CH2 CH2 O )19 - CH2CH2CH3

506	Polyhydroxy (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 503.  Compounds which contain more than one hydroxyl bonded to carbon. (1) Note. This subclass contains, for example: H37C18- OH HO - CH2 CH2 -NH - CH2 CH2CH2 -NH - CH2 CH2 - OH

507	Plural hydroxys in the same substituent on the amino nitrogen (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)
	This subclass is indented under subclass 506.  Compounds which contain more than one hydroxyl bonded to carbon on the same amino nitrogen substituent. (1) Note. This subclass contains, for example: HO - CH2 - (CHOH) 3OH HO - CH2CH2- OH

508	Monoether
	This subclass is indented under subclass 503.  Compounds which contain only one ether group. (1) Note. This subclass contains, for example: CH3 - CH2 - O - CH2- CH2 -CH3

509	Carbon to carbon unsaturation containing
	This subclass is indented under subclass 463.  Compounds which contain a double or triple bond between two carbons. (1) Note. This subclass contains, for example: H2C = CHCH2CH3

510	Halogen, bonded directly to carbon, containing
	This subclass is indented under subclass 463.  Compounds which contain halogen bonded directly to carbon. (1) Note. This subclass contains, for example: Br(CH2)3-NHCH3 H2N - CH2 - (CF2)3- CH2- NH2

511	Plural amino nitrogens containing
	This subclass is indented under subclass 463.  Compounds which contain more than one amino nitrogen. (1) Note. This subclass contains, for example. H31C15CH2CH2CH3

512	Three or more amino nitrogens containing
	This subclass is indented under subclass 511.  Compounds which contain three or more amino nitrogens. (1) Note. This subclass contains, for example: