Crystalline 19-norsteroids

Details Crystalline 19-norsteroids Crystalline 19-norsteroids

2004-04-01

2011-10-25

Badio, Barbara P (Department: 1628)

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

active

08044223

ABSTRACT:
The present invention are two crystalline salts, 17α-acetoxy-21-methoxy-11β-(4-,N,N-dimethylaminophenyl)-19 norpregna-4,9-diene-3,20-dione hydrochloride and 17α-acetoxy-21-methoxy-11β-(4-,N,N-dimethylaminophenyl)-19 norpregna-4,9-diene-3,20-dione hydrobromide, of the corresponding free base which is an amorphous solid.

REFERENCES:
patent: 2002/0025951 (2002-02-01), Kim et al.
patent: WO 01/47945 (2001-07-01), None
Berge et al., Pharmaceutical salts. Journal of Pharmaceutical Sciences, vol. 66(1), pp. 1-19, 1977.

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