申请人:Kissei Pharmaceutical Co., Ltd.
公开号:EP1878718A1
公开(公告)日:2008-01-16
The present invention provids ethyl (-)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate hydrochloride 1/4 hydrate or a crystal thereof which can be determined by characteristic diffraction peaks of the powder X-ray diffraction, thermogravimetry-differential thermal analysis or the like, and obtained by manufacturing ethyl (-)-2-[4-[2-[[1S,2R]-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethyl]-2,5-dimethylphenoxyacetate by a specific method.
本发明提供(-)-2-[4-[2-[[1S,2R]-2-羟基-2-(4-羟基苯基)-1-甲基乙基]氨基]乙基]-2,5-二甲基苯氧乙酸乙酯盐酸盐 1/4 水合物或其晶体,该晶体可通过粉末 X 射线衍射的特征衍射峰确定、(-)-2-[4-[2-[[1S,2R]-2-羟基-2-(4-羟基苯基)-1-甲基乙基]氨基]乙基]-2,5-二甲基苯氧基乙酸乙酯,通过特定方法制得。