Synonyms: Cuprate(4-), (5-((4-chloro-6-((2-methyl-4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-4-sulfo-1-naphthalenyl)diazenyl-kappaN1)-2,7-naphthalenedisulfonato(6-))-, sodium (1:4);Cuprate(4-), (5-((4-chloro-6-((2-methyl-4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-4-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-4-sulfo-1-naphthalenyl)azo-kappaN1)-2,7-naphthalenedisulfonato(6-))-, tetrasodium;Tetrasodium (5-((4-chloro-6-(4-sulpho-o-toluidino)-1,3,5-triazin-2-yl)amino)-4-hydroxy-3-((2-hydroxy-4-sulpho-1-naphthyl)azo)naphthalene-2,7-disulphonato(6-))cuprate(4-);copper(2+) sodium 5-({4-chloro-6-[(2-methyl-4-sulfonatophenyl)amino]-1,3,5-triazin-2-yl}amino)-4-oxido-3-[(E)-(2-oxido-4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonate (1:4:1)