Synonyms: Cuprate(4-), (5-(((7-(2-(5-chloro-2-(hydroxy-kappaO)-3-sulfophenyl)diazenyl-kappaN1)-8-(hydroxy-kappaO)-3,6-disulfo-1-naphthalenyl)amino)sulfonyl)-2-hydroxybenzoato(6-))-, sodium hydrogen (1:3:1);Cuprate(4-), (5-(((7-((5-chloro-2-(hydroxy-kappaO)-3-sulfophenyl)azo-kappaN1)-8-(hydroxy-kappaO)-3,6-disulfo-1-naphthalenyl)amino)sulfonyl)-2-hydroxybenzoato(6-))-, trisodium hydrogen;Cuprate(4-), (5-(((7-((5-chloro-2-hydroxy-3-sulfophenyl)azo)-8-hydroxy-3,6-disulfo-1-naphthalenyl)amino)sulfonyl)-2-hydroxybenzoato(6-))-, trisodium hydrogen;Trisodium hydrogen (5-(((7-((5-chloro-2-hydroxy-3-sulphophenyl)azo)-8-hydroxy-3,6-disulpho-1-naphthyl)amino)sulphonyl)salicylato(6-))cuprate(4-)