Provided are a crystalline form of an androgen receptor inhibitor and a preparation method thereof. In particular, provided are type I crystal of (S)-4-(3-(4-(2,3-dihydroxypropoxy)phenyl)-4,4-dimethyl-5-carbonyl-2-thioimidazolin-1-yl)-2-(trifluoromethyl)benzonitrile (a compound of formula (I)) and a preparation method thereof, wherein the method comprises: 1) any crystal form or amorphous form of the compound as shown by formula (I) is added to an appropriate amount of an organic solvent, heated and dissolved until clear, following by being cooled down and crystallized, wherein the organic solvent is selected from any one of esters, ketones, nitriles and ethers which have 5 or less carbon atoms, or a mixed solvent thereof; and 2) the crystal is filtered, washed and dried. The obtained type I crystal of the compound of formula (I) has a good chemical stability and crystal form stability, and the crystallization solvent used has a low toxicity and residue, and can be better used for clinical treatment.
本发明提供了一种雄激素受体
抑制剂的晶体及其制备方法。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-1-基)-2-(三
氟甲基)
苯腈(式(I)化合物)的I型晶体及其制备方法,其中该方法包括:1) 将式(I)所示化合物的任何晶型或无定形形式加入到适量的有机溶剂中,加热并溶解至透明,然后冷却并结晶,其中有机溶剂选自具有 5 个或更少
碳原子的
酯、
酮、腈和醚中的任意一种,或它们的混合溶剂;以及 2) 过滤、洗涤并干燥晶体。所得到的式(I)化合物I型晶体具有良好的
化学稳定性和晶型稳定性,所用的结晶溶剂毒性低、残留少,可更好地用于临床治疗。