👉 The chemical is a benzimidazolic acid with an alkene ring and its conjugate base, a sulphonamide. The chemical formula is C8H12NNH3N3OCCNHC(3)CH3C(OH)NC3H6. 1289. 1H-Benzimidazole-5-carboxamide, 2-(4-aminophenyl)-N-phenyl-; 820242-67-9