Crystal form

Details Crystal form Crystal form

2006-09-26

2006-09-26

Qazi, Sabiha N. (Department: 1616)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C540S043000, C552S502000, C552S508000, C552S638000, C514S175000

Reexamination Certificate

active

07112670

ABSTRACT:
The present invention involves a novel crystal form of 17β-hydroxy-7α-(5′-methyl-2′-furyl)-pregna-4,9(11)-dien-3-one-21-carboxylic acid, γ-lactone, having the formulawhich is an intermediate useful in preparation of an important pharmaceutical, eplerenone.

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