Crystalline acid salts of cefdinir and process for preparing...

Details Crystalline acid salts of cefdinir and process for preparing... Crystalline acid salts of cefdinir and process for preparing...

2007-01-02

2007-01-02

Berch, Mark L. (Department: 1624)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10479291

ABSTRACT:
High purity cefdinir is prepared in a high yield by a process comprising the steps of: treating a crystalline salt of a cefdinir intermediate with a formic acid-sulfuric acid mixture or a formic acid-methanesulfonic acid mixture to obtain a crystalline salt of cefdinir and reacting the crystalline salt with a base in a solvent.

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