AKIHITO UEMURA JAPAN,TOMOAKI NOGATA JAPAN,TAKUMI TAKEYASU JAPAN
申请号：
IN10051/DELNP/2011
公开号：
IN2011DN10051A
申请日:
2011.12.20
申请国别(地区):
IN
年份:
2012
代理人:
摘要：
Disclosed is a process for producing A-form crystals of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid, comprising: a step of dissolving by heating 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid in one or a plurality of solvents as a good solvent, selected from the group consisting of 1-propanol, 2-propanol, ethanol, and acetone a step of cooling the solution and a step of adding to the solution a hydrocarbon solvent as a poor solvent.
