US 7,462,368 B2
	Polymorphs of sodium 4-[(4-chloro-2-hydroxybenzoyl) amino]butanoate
Satej Bhandarkar, Downingtown, Pa. (US); Shingai Majuru, Brewster, N.Y. (US); and Halina Levchik, Croton On Hudson, N.Y. (US)
Assigned to Emisphere Technologies, Inc., Cedar Knolls, N.J. (US)
Filed on Mar. 14, 2007, as Appl. No. 11/686,341.
Application 11/686341 is a division of application No. 10/501205, granted, now 7,227,033, previously published as PCT/US03/00878, filed on Jan. 09, 2003.
Claims priority of provisional application 60/347610, filed on Jan. 09, 2002.
Prior Publication US 2007/0161708 A1, Jul. 12, 2007
Int. Cl. A61F 13/00 (2006.01); C07C 229/00 (2006.01)

U.S. Cl. 424—489  [562/450; 562/7]

11 Claims

1. Sodium 4-[(4-chloro-2-hydroxybenzoyl)amino]-butanoate pentahydrate exhibiting an X-ray powder diffraction pattern having peaks in degrees 2θ±0.2° 2θ at 5.47, 10.2, 16.3, 19.8, 21.7, 23.5, 27.3, 28.9, 30.6, and 33.3.