Formoterol tartrate process and polymorph

Details Formoterol tartrate process and polymorph Formoterol tartrate process and polymorph

C - Chemistry, Metallurgy

07

C

C07C 231/24 (2006.01) A61K 31/165 (2006.01) C07C 233/43 (2006.01) C07C 233/25 (2006.01)

Patent

CA 2477642

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.

La présente invention concerne un procédé d'élaboration d'un sel hautement pur de R,R-formotérol L-tartrate. Ce procédé aboutit au polymorphe thermodynamiquement le plus stable par recristallisation d'un polymorphe de l'invention.

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