71215-75-3 Cuprate(2-), (3-(hydroxy-kappaO)-4-((2-(hydroxy-kappaO)-4-hydroxy-3-((4-nitrophenyl)azo)-5-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)phenyl)azo-kappaN1)-7-nitro-1-naphthalenesulfonato(4-))-, dihydrogen Dihydrogen (4-((2,4-dihydroxy-3-((4-nitrophenyl)azo)-5-((4-(4-nitro-2-sulphoanilino)phenyl)azo)phenyl)azo)-3-hydroxy-7-nitronaphthalene-1-sulphonato(4-))cuprate(2-) EINECS 275-268-7