Synonyms: trisodium 7-[[4-[[2-methyl-4-[(sulphonatomethyl)amino]phenyl]azo]phenyl]azo]naphthalene-1,3-disulphonate;7-[[4-[[2-Methyl-4-[(sulfomethyl)amino]phenyl]azo]phenyl]azo]-1,3-naphthalenedisulfonic acid trisodium salt;1,3-Naphthalenedisulfonic acid, 7-((4-((2-methyl-4-((sulfomethyl)amino)phenyl)azo)phenyl)azo)-, trisodium salt;1,3-Naphthalenedisulfonic acid, 7-(2-(4-(2-(2-methyl-4-((sulfomethyl)amino)phenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:3);Einecs 268-424-0;Trisodium 7-((4-((2-methyl-4-((sulphonatomethyl)amino)phenyl)azo)phenyl)azo)naphthalene-1,3-disulphonate