IP Attorneys Group, LLC
Crystalline forms of temozolomide and the method for preparing same
Provided in the present invention are a new method for preparing the crystalline forms of Temozolomide and three types of crystalline form of Temozolomide by the method. Said method comprises the following steps: a Temozolomide is dissolved into dimethyl sulphoxide, a second organic solvent is added for recrystallization to prepare the crystalline forms of Temozolomide, wherein the second organic solvent is an alcohol, a ketone, a halohydrocarbon or an ester.
Jiangsu Tasly Diyi Pharmaceutical Co., Ltd.
C C
C07B C07D
additional inventional
Qingwei Yuzhe Hailong Guocheng Yu Wenzheng
Hou Gao Yang Wang Zhang Liu