Description General description N-(4-Aminophenyl)-4-methylbenzenesulfonamide is a sulfonamide derivative. It has been reported to crystallize in an asymmetric unit containing two independent molecules, having V-shaped conformations. Its crystals are orthorhombic having space group P212121. Application N-(4-Aminophenyl)-4-methylbenzenesulfonamide may be used in the preparation of following compounds: • 4-methyl-N-[4-[3-(2-naphthyl)imidazo[1,2-a]pyrazine-8-yl]aminophenyl]benzenesulfonamide • 4-methyl-N-[4-[2-(2-naphthyl)imidazo[1,2-a]pyrazine-8-yl]aminophenyl]benzenesulfonamide • 2- and 3-substituted 8-amino imidazo[1,2-a]pyrazines Packaging 1 g in glass bottle