72496-92-5 EINECS 276-704-9 Naphthalenesulfonic acid, 5-((2,4-dihydroxy-5-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)phenyl)azo)-8-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)-, trisodium salt Trisodium 5-((2,4-dihydroxy-5-((4-((4-nitro-2-sulphonatophenyl)amino)phenyl)azo)phenyl)azo)-8-((4-((4-nitro-2-sulphonatophenyl)amino)phenyl)azo)naphthalenesulphonate