Process for purifying...

Details Process for purifying... Process for purifying...

2008-03-25

2008-03-25

Berch, Mark L. (Department: 1624)

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

10952151

ABSTRACT:
Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia. Also provided are processes for making Forms I, II, and V using precipitation methods.

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