71215-74-2 Cuprate(2-), (4-((4-amino-2-(hydroxy-kappaO)-3-((4-nitrophenyl)azo)-5-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)phenyl)azo-kappaN1)-3-(hydroxy-kappaO)-7-nitro-1-naphthalenesulfonato(4-))-, dihydrogen Dihydrogen (4-((4-amino-2-hydroxy-3-((4-nitrophenyl)azo)-5-((4-((4-nitro-2-sulphophenyl)amino)phenyl)azo)phenyl)azo)-3-hydroxy-7-nitronaphthalene-1-sulphonato(4-))cuprate(2-) EINECS 275-267-1