Patent ID: 8461190

Claim:
A process for purifying Rufinamide, comprising: a) providing a dispersion of crude 1-[(2,6-difluorophenyl)methyl]-1H-1,2,3-triazole-4-carboxamide in a solvent comprising at least an optionally substituted C 2 -C 5 carboxylic acid or benzoic acid, and dissolving the crude 1-[(2,6-difluorophenyl)methyl]-1H-1,2,3-triazole-4-carboxamide in the solvent; b) cooling the resulting solution for a time ranging from about one hour to about 10 hours to obtain Rufinamide crystalline Form A and c) recovering the solid product which has an XRPD wherein the main peaks are located at 7.68; 8.46; 13.56; 15.75; 16.95; 18.36; 19.47; 20.49; 24.18; 25.47° in 2θ (±0.2°); and characterized by a XRPD spectrum as shown in FIG. 1 and a DSC as shown in FIG. 2 .