The crystalline forms of Temozolomide and the method for preparing same

摘要

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 perpare the crystalline forms of Temozolomide, wherein the second organic solvent is an alcohol, a ketone, a halohydrocarbon or an ester.