Patent ID: 7449584

Claim:
A process for making N-(2-((4-Hydroxyphenyl)amino)pyridin-3-yl)-4-methoxybenzenesulfonamide Crystalline Form 1, said processes comprising: causing nucleation in mixture of N-(2-((4-hydroxyphenyl)amino)pyridin-3 -yl)-4-methoxybenzenesulfonamide and solvent between about 60° C. and 100° C., wherein the N-(2-((4-hydroxyphenyl)amino)pyridin-3 -yl)-4-methoxybenzenesulfonamide is completely dissolved in the solvent and the solvent is supersaturated with the N-(2-((4-hydroxyphenyl)amino)pyridin-3 -yl)-4-methoxybenzenesulfonamide and isolating said N-(2-((4-Hydroxyphenyl)amino)pyridin-3 -yl)-4-methoxybenzenesulfonamide Crystalline Form 1.