Patent ID: 8410278

Claim:
A method for preparing Polymorph A of 3-bromo-1-(3-chloro-2-pyridinyl)-N-[4-cyano-2-methyl-6-[(methylamino)carbonyl]phenyl]-1H-pyrazole-5-carboxamide characterized by a X-ray diffraction pattern having at least the 2θ reflection positions 2θ 6.78 11.09 19.94 20.99 26.57 26.98 31.52 comprising heating at a temperature between about 40° C. and the boiling point of the solvent a mixture comprising a solvent selected from the group consisting of water, n-heptane, 1-chlorobutane, toluene, 1-butanol and 1-pentanol, and Polymorph B of 3-bromo-1-(3-chloro-2-pyridinyl)-N-[4-cyano-2-methyl-6-[(methylamino)carbonyl]phenyl]-1H-pyrazole-5-carboxamide characterized by a X-ray diffraction pattern having at least the 2θ reflection positions 2θ 7.43 9.89 18.68 19.36 22.16 23.09 25.70.