One kind of new drug imatinib polymorphs

The present invention relates to the field of pharmaceutical chemistry, Sunitinib aspect relates to a new crystal form, a crystalline form of sunitinib "substantially pure" Form B or Form C, on the other hand it relates to sunitinib L- malate new crystalline form, the L- sunitinib malate Form is "substantially pure" Form D; these are non-hygroscopic crystalline form, industrially advantageous production operation and / or preparation of formulations; the present invention further provides a method of preparing these crystalline forms.