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公开(公告)号:US06506742B2
公开(公告)日:2003-01-14
申请号:US09727871
申请日:2000-12-01
申请人: George Wong , Shifeng Wei , Herling Uang
发明人: George Wong , Shifeng Wei , Herling Uang
IPC分类号: A61K3156
CPC分类号: A61K9/0095 , A61K31/565 , A61K31/567 , Y10S514/843 , A61K2300/00
摘要: This invention provides a convenient process for preparing an oral contraceptive liquid formulation having improved solubility, bioavailability and stability useful as a reference standard.