| US 7,521,472 B2 | ||
| Crystal of two-ring heterocyclic sulfonamide compound | ||
| Eiichi Yamamoto, Tsukuba (Japan) | ||
| Assigned to Eisai R&D Management Co., Ltd., Tokyo (Japan) | ||
| Appl. No. 11/667,150 PCT Filed Nov. 08, 2005, PCT No. PCT/JP2005/020414 § 371(c)(1), (2), (4) Date May 07, 2007, PCT Pub. No. WO2006/054456, PCT Pub. Date May 26, 2006. |
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| Claims priority of application No. 2004-332855 (JP), filed on Nov. 17, 2004. | ||
| Prior Publication US 2007/0299266 A1, Dec. 27, 2007 | ||
| Int. Cl. A61K 31/404 (2006.01); C07D 209/04 (2006.01) | ||
| U.S. Cl. 514—415 [548/469] | 6 Claims |
| 1. A β-type crystal of N-(3-chloro-1H-indol-7-yl)-4-sulfamoylbenzenesulfonamide,
wherein said β-type crystal has diffraction peaks at a diffraction angle (20±0.2°) of 18.4°, 10.2°, 13.3°, 15.4°, 20.0°and
20.4°as measured by powder X-ray diffractometry.
|