Formoterol tartrate process and polymorph

Details Formoterol tartrate process and polymorph Formoterol tartrate process and polymorph

2011-06-21

2011-06-21

Puttlitz, Karl J (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S220000, C564S221000, C514S629000, C514S630000

Reexamination Certificate

active

07964753

ABSTRACT:
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.

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