2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-((2-nitrophenyl)azo)- 38133-90-3 EINECS 253-796-9 N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-((2-nitrophenyl)azo)naphthalene-2-carboxamide