14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate crystal...

Details 14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate crystal... 14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate crystal...

C - Chemistry, Metallurgy

07

J

C07J 1/00 (2006.01)

Patent

CA 2124382

ABSTRACT Provided are stable hydrate crystals of 14.alpha.-hydroxy-4-androstene-3,6,17-trione having a biological activity of human placenta-originating estrodiene synthesis enzyme inhibitory action. These hydrate crystals include two kinds of 14.alpha.-hydroxy-4- androstene-3,6,17-trione hydrate crystals having a diffraction pattern having characteristic peaks at diffraction angles in crystalline powder X-ray diffraction. Processes for producing these hydrate crystals are also provided.

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