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