Synonyms: disodium 2,2'-[(2,2'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl)]bisethanesulphonate;2,2'-[(2,2'-Dimethoxy-1,1'-biphenyl-4,4'-diyl)bis(3-methyltriazene-3,1-diyl)]bis(ethanesulfonic acid)disodium salt;2,2'-Dimethoxy-4,4'-((bis(N-methyl-N-(2-sulfoethyl))triazeno)biphenyl, disodium salt;Disodium 2,2'-((2,2'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl))bisethanesulphonate;Einecs 268-675-6;Ethanesulfonic acid, 2,2'-((2,2'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl))bis-, disodium salt;Ethanesulfonic acid, 2,2'-((2,2'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl))bis-, sodium salt (1:2)