Synonyms: 2,7-naphthalenedisulfonic acid, 3-amino-4-[(E)-2-[4'-[(E)-2-(2-amino-6-sulfo-1-naphthalenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl]-, sodium salt (1:3);3-Amino-4-[[4'-[(2-amino-6-sulfo-1-naphthalenyl)azo]-3,3'-dimethyl [1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic Acid Trisodium Salt;574-65-2;Brilliant Vital Red;C.I. Direct Red 34;Ditolyldiazo-3,6-disulfo-b-naphthylamine-b-naphthylamine-6-sulfonicAcid Sodium Salt;Trisodium 3-amino-4-[(E)-{4'-[(E)-(2-amino-6-sulfonato-1-naphthyl)diazenyl]-3,3'-dimethylbiphenyl-4-yl}diazenyl]naphthalene-2,7-disulfonate;Vital Red Evans