Yoshio OHARA,Yasutaka Takada,Hiroo Matsumoto,Akihiro Yoshida
申请号：
US13487289
公开号：
US20120245200A1
申请日:
2012.06.04
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A method for producing a drug substance of crystalline pitavastatin calcium excellent in stability, is presented. In the production of a compound (pitavastatin calcium) represented by the formula (1):The water content is adjusted to a level of from 5 to 15%, and the crystal form is controlled to be crystal form A, thereby to obtain a drug substance excellent in stability.
