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公开(公告)号:EP2305635B1
公开(公告)日:2018-06-13
申请号:EP10178918.8
申请日:2002-10-23
IPC分类号: C07C231/24 , C07C233/43 , A61K31/165
CPC分类号: A61K31/205 , C07B2200/13 , C07C231/24 , C07C233/25 , C07C233/43
摘要: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.