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.

Показан метод подготовки высоки чисто соли р, Л-tartrata R-formoterol. Процесс обеспечивает само термодинамически стабилизированный полиморф рекристаллизацией полиморфа романа.

 
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