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-lyl 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.