发明授权
US08361997B2 Process for preparing a crystalline form of halobetasol propionate
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制备结晶形式的丙酸halobetasol的方法
- 专利标题: Process for preparing a crystalline form of halobetasol propionate
- 专利标题(中): 制备结晶形式的丙酸halobetasol的方法
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申请号: US12632365申请日: 2009-12-07
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公开(公告)号: US08361997B2公开(公告)日: 2013-01-29
- 发明人: Daniella Gutman , Shimon Chernyak
- 申请人: Daniella Gutman , Shimon Chernyak
- 申请人地址: KY Grand Cayman
- 专利权人: Taro Pharmaceutical North America, Inc.
- 当前专利权人: Taro Pharmaceutical North America, Inc.
- 当前专利权人地址: KY Grand Cayman
- 代理机构: Venable LLP
- 代理商 Michael A. Gollin; Keith G. Haddaway
- 主分类号: A61K31/56
- IPC分类号: A61K31/56 ; C07J5/00 ; C07J7/00
摘要:
The present invention provides a process for preparing a crystalline form of halobetasol propionate, comprising the step of crystallizing halobetasol propionate from absolute ethanol or a mixture of ethanol and water, wherein the crystalline form of halobetasol propionate is characterized by an x-ray powder diffraction pattern having peaks at 10.0, 11.6, 12.9, 13.4, 14.5, 16.4, 17.6, and 23.5±0.2 degrees 2θ.
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