Synonyms: Cuprate(3-), (5-(acetylamino)-4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-5-methyl-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)diazenyl-kappaN1)-2,7-naphthalenedisulfonato(5-))-, sodium (1:3);Cuprate(3-), (5-(acetylamino)-4-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-5-methyl-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo-kappaN1)-2,7-naphthalenedisulfonato(5-))-, trisodium;Trisodium (5-acetamido-4-hydroxy-3-((2-hydroxy-5-methyl-4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2,7-disulphonato(5-))cuprate(3);copper(2+) sodium 5-(acetylamino)-3-[(E)-(5-methyl-2-oxido-4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]-4-oxidonaphthalene-2,7-disulfonate (1:3:1)