Synonyms: Cuprate(4-), (2-((4-chloro-6-((4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-5-(hydroxy-kappaO)-6-(2-(2-(hydroxy-kappaO)-5-sulfophenyl)diazenyl-kappaN1)-1,7-naphthalenedisulfonato(6-))-, sodium (1:4);2-((4-Chloro-6-((4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-5-hydroxy-6-((2-hydroxy-5-sulfophenyl)azo)-1,7-naphthalenedisulfonic acid, tetrasodium salt, copper complex;Cuprate(4-), (2-((4-chloro-6-((4-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-5-(hydroxy-kappaO)-6-((2-(hydroxy-kappaO)-5-sulfophenyl)azo-kappaN1)-1,7-naphthalenedisulfonato(6-))-, tetrasodium;Tetrasodium (2-((4-chloro-6-(4-sulphoanilino)-1,3,5-triazin-2-yl)amino)-5-hydroxy-6-((2-hydroxy-5-sulphophenyl)azo)naphthalene-1,7-disulphonato(6-))cuprate(4-);copper(2+) sodium 2-({4-chloro-6-[(4-sulfonatophenyl)amino]-1,3,5-triazin-2-yl}amino)-5-oxido-6-[(E)-(2-oxido-5-sulfonatophenyl)diazenyl]naphthalene-1,7-disulfonate (1:4:1)