68400-23-7 Cuprate(4-), (5-amino-4-(hydroxy-kappaO)-3-((5-(hydroxy-kappaO)-6-((2-hydroxy-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo-kappaN1)-7-sulfo-2-naphthalenyl)azo)-2,7-naphthalenedisulfonato(6-))-, tetrahydrogen EINECS 270-014-1 Tetrahydrogen (5-amino-4-hydroxy-3-((5-hydroxy-6-((2-hydroxy-4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)-7-sulpho-2-naphthyl)azo)naphthalene-2,7-disulphonato(6-))cuprate(4-)