Stable Crystal Form of Imatinib Mesylate and Process for the Preparation Thereof

摘要

The invention relates to a stable, non hygroscopic alpha crystalline form of methane sulfonic acid addition salt of 4-(4-methyl piperazin-1yl methyl)-N-[4-methyl-3-(4-pyridin-3-yl) pyrimidin-2-yl amino)phenyl]-benzamide (imatinib mesylate). A process for the preparation of the crystalline form is also described.