The present invention provides in one embodiment individual crystalline polymorphs of (S)-1-(4,4,6,6,6-pentadeutero-5-hydroxyhexyl)-3,7-dimethyl-1H-purine- 2,6(3H,7H)-dione designated Form 1, Form 2, Form 3 and Form 4. Each polymorph disclosed herein is characterized according to one or more of (a) powder X-ray diffraction data ("XRPD"); (b) differential scanning calorimetry ("DSC"); and (e) thermogravimetric analysis (TGA).
本发明在一个实施例中提供了(S)-1-(4,4,6,6,6-五重
氘代-5-羟基己基)-3,7-二甲基-1H-
嘌呤-2,6(3H,7H)-二酮的单个晶体多型,分别命名为形式1、形式2、形式3和形式4。本文所披露的每个多型根据(a)粉末X射线衍射数据(“XRPD”);(b)差示扫描量热法(“
DSC”);和(e)热重分析(TGA)中的一个或多个特征进行表征。