A crystalline form of an androgen receptor inhibitor and its preparation method are provided. In particular, provided are crystal form I of (S)-4-(3-(4-(2,3-dihydroxypropoxy)phenyl)-4,4-dimethyl-5-carbonyl-2-thioimidazolin-2-yl)-2-(trifluoromethyl)benzonitrile (a compound of formula (I)) and its preparation method. The method includes (a) adding any crystal form or amorphous form of the compound of formula (I) to an organic solvent to obtain a solution and heating the solution until it is clear, followed by cooling the solution to precipitate a crystal; and (b) filtering, washing, and drying the crystal. The obtained crystal form I of the compound of formula (I) has good chemical stability and crystal form stability, and the crystallization solvent used has low toxicity and residue, and is thus better for use in clinical treatment.
本研究提供了一种雄激素受体
抑制剂的晶体形式及其制备方法。特别是提供了(S)-4-(3-(4-(2,3-二羟基丙氧基)苯基)-4,4-二甲基-5-羰基-2-
硫代
咪唑啉-2-基)-2-(三
氟甲基)苯腈(式(I)化合物)的晶体形式 I 及其制备方法。该方法包括:(a) 将式(I)化合物的任何晶型或无定形形式加入到有机溶剂中以获得溶液,并加热溶液至透明,然后冷却溶液以析出晶体;(b) 过滤、洗涤和干燥晶体。所得到的式(I)化合物的晶型 I 具有良好的
化学稳定性和晶型稳定性,所使用的结晶溶剂毒性低、残留少,因此更适合用于临床治疗。