Formoterol tartrate polymorph

   
   

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.

Une méthode de préparation d'un sel fortement pur de R, L-tartrate de R-formoterol est révélée. Le processus fournit le plus thermodynamiquement le polymorphe stable par la recristallisation d'un polymorphe de roman.

 
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