发明名称 |
PROCESS FOR PRODUCTION OF A POLYMORPH OF 2-(3-CYANO-4- ISOBUTYLOXYPHENYL)-4-METHYL-5-THIAZOLECARBOXYLIC ACID |
摘要 |
<p>A method for producing crystal A of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid by dissolving 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid in methanol or a mixed solvent of methanol and water (the volume ratio of methanol to water is 90/10 or more), then adding water until the ratio of methanol to water becomes 7/3, and further adding a specific amount of a seed crystal at a specific timing during the addition of water.</p> |
申请公布号 |
EP2039691(B1) |
申请公布日期 |
2013.09.18 |
申请号 |
EP20070767403 |
申请日期 |
2007.06.22 |
申请人 |
TEIJIN PHARMA LIMITED;KITAMURA, MITSUTAKA |
发明人 |
KITAMURA, MITSUTAKA |
分类号 |
C07D277/20;A61K31/426;A61P19/06;B01D9/02;C07D277/56 |
主分类号 |
C07D277/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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