13138-53-9

4-Nitrophthalamide is a stain/dye. Dyes and metabolites.

30 g (0.156 mol) 4-nitrophthalimide was stirred in 168 mL 32% ammonia solution for 24 hours. Then it was filtered, washed with cold water, and tetrahydrofuran (THF). The color of phthalimide was yellow and it turned to white as reaction proceeds. Molecular formula: C8H7N3O4. Yield: 24 g (73%). Mp: 197 ??C.