2-Naphthalenecarboxamide, 4-((4-chloro-2-nitrophenyl)azo)-3-hydroxy-N-(2-methylphenyl)- 4-((4-Chloro-2-nitrophenyl)azo)-3-hydroxy-N-(2-methylphenyl)naphthalene-2-carboxamide 6471-50-7 EINECS 229-314-8