Arena Pharmaceuticals, Inc.
PROCESSES USEFUL FOR THE PREPARATION OF 1-[3-(4-BROMO-2-METHYL-2H-PYRAZOL-3-YL)-4-METHOXY-PHENYL]-3-(2,4-DIFLUORO- -PHENYL)-UREA AND CRYSTALLINE FORMS RELATED THERETO

Abstract:

The present invention is directed to processes and intermediates useful for the preparation of 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro- -phenyl)-urea (Compound I), crystalline forms and solvate forms thereof; and compositions comprising 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro- -phenyl)-urea, crystalline forms and solvate forms thereof prepared by processes as described herein.