Synonyms: Cuprate(1-), (3-(2-(3-(2-(4-(((4-(2-(2-amino-4-hydroxyphenyl)diazenyl)phenyl)amino)carbonyl)phenyl)diazenyl)-2-(hydroxy-kappaO)-4-hydroxyphenyl)diazenyl-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))-, sodium (1:1);Cuprate(1-), (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2,4-dihydroxyphenyl)azo)-4-hydroxybenzenesulfonato(3-))-, sodium;Cuprate(1-), (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2-(hydroxy-kappaO)-4-hydroxyphenyl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(3-))-, sodium;Sodium (3-((3-((4-(((4-((2-amino-4-hydroxyphenyl)azo)phenyl)amino)carbonyl)phenyl)azo)-2,4-dihydroxyphenyl)azo)-4-hydroxybenzenesulphonato(3-))cuprate(1-);copper(2+) sodium 3-{(2Z)-2-[(5E)-5-{2-[4-({4-[(E)-(2-amino-4-oxidophenyl)diazenyl]phenyl}carbamoyl)phenyl]hydrazinylidene}-4,6-dioxocyclohex-2-en-1-ylidene]hydrazinyl}-4-oxidobenzenesulfonate (1:1:1)