Patent ID: 7169799
Filing Date: 2007-01-30
Classification: A61K,A61P,C07D,C30B

Abstract:
1. A production method for a crystal of (R)-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl]methyl]sulfinyl]benzimidazole·n′H 2 O (wherein n′ is about 0 to about 0.1) or a salt thereof, which comprises obtaining the crystal by crystallization from an organic solvent solution or suspension in which (R)-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl]methyl]sulfinyl]benzimidazole·nH 2 O (wherein n is about 0.1 to about 1.0) or a salt thereof has been dissolved or suspended; wherein the crystal of (R)-2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl]methyl]sulfinyl]benzimidazole·n′H