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US 8,044,223 B2Granted
Crystalline 19-norsteroids
AssigneeBridge Organics Co.
InventorVerlan H. VanRheenen
Life of this patent
Estimating the term…
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.
Claims4
17α-Acetoxy-21-methoxy-11β-(4-,N,N-dimethylaminophenyl)-19-norpregna-4,9-diene-3,20-dione hydrochloride.
17α-Acetoxy-21-methoxy-11β-(4-,N,N-dimethylaminophenyl)-19-norpregna-4,9-diene-3,20-dione hydrobromide.
Dependencies are inferred from the claim text.