2-Naphthalenesulfonic acid, 4-hydroxy-3-((2-methoxy-5-nitrophenyl)azo)-6-(phenylamino)-, monosodium salt 3626-41-3 Acid Brown 2 C.I. Acid Brown 2 EINECS 222-840-9 Sodium 4-hydroxy-3-((2-methoxy-5-nitrophenyl)azo)-6-(phenylamino)naphthalene-2-sulphonate