68039-60-1 Cuprate(2-), (7-amino-4-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo-kappaN1)-2-naphthalenesulfonato(4-))-, dihydrogen Dihydrogen (7-amino-4-hydroxy-3-((2-hydroxy-4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2-sulphonato(4-))cuprate(2-) EINECS 268-268-3