Provided is a crystalline polymorphic form A of 15β-hydroxy-osaterone acetate having an improved stability (storage stability, pulverization stability, and absorption characteristics). In a powder X-ray diffraction spectrum, characteristic diffraction peaks of the crystalline polymorphic form A of 15β-hydroxy-osaterone acetate appear at diffraction angles 2θ of 9.6° ± 0.2°, 17.1° ± 0.2°, and 20.2° ± 0.2°. The crystalline polymorphic form A has a melting point of 280 to 283°C and is a prism crystal.
本文提供了一种 15β-hydroxy-osaterone acetate 的结晶多晶型 A,其稳定性(贮存稳定性、粉碎稳定性和吸收特性)均有所提高。在粉末 X 射线衍射谱中,15β-羟基-
醋酸奥沙泰酮的结晶多晶型 A 的特征衍射峰出现在 9.6°±0.2°、17.1°±0.2° 和 20.2°±0.2°的衍射角 2θ。结晶多晶型 A 的熔点为 280 至 283°C,为棱柱晶体。