Synonyms: 2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-(2-(4-((4-((2-hydroxyethyl)amino)-6-((5-hydroxy-6-(2-(2-methoxy-5-sulfophenyl)diazenyl)-7-sulfo-2-naphthalenyl)amino)-1,3,5-triazin-2-yl)amino)-5-methoxy-2-methylphenyl)diazenyl)-, sodium salt (1:4);2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-((4-((4-((2-hydroxyethyl)amino)-6-((5-hydroxy-6-((2-methoxy-5-sulfophenyl)azo)-7-sulfo-2-naphthalenyl)amino)-1,3,5-triazin-2-yl)amino)-5-methoxy-2-methylphenyl)azo)-, tetrasodium salt;tetrasodium 4-hydroxy-5-[4-[[4-(2-hydroxyethylamino)-6-[[5-hydroxy-6-(2-methoxy-5-sulfonato-phenyl)azo-7-sulfonato-2-naphthyl]amino]-1,3,5-triazin-2-yl]amino]-5-methoxy-2-methyl-phenyl]azo-naphthalene-2,7-disulfonate