2-Naphthalenecarboxamide, N,N'-1,5-naphthalenediylbis(3-hydroxy-4-((2-methoxy-4-nitrophenyl)azo)- 68516-74-5 EINECS 271-177-1 N,N'-1,5-Naphthylenebis(4-(2-methoxy-4-nitrophenyl)azo)-3-hydroxy-2-naphthamide N,N'-Naphthalene-1,5-diylbis(3-hydroxy-4-((2-methoxy-4-nitrophenyl)azo)naphthalene-2-carboxamide)