68140-32-9 Cuprate(3-), (mu-(4-((3,3'-di(hydroxy-kappaO)-4'-((1-(hydroxy-kappaO)-4-sulfo-2-naphthalenyl)azo-kappaN1)(1,1'-biphenyl)-4-yl)azo-kappaN1)-3-(hydroxy-kappaO)-2,7-naphthalenedisulfonato(7-)))di-, trisodium EINECS 268-789-6 Trisodium (mu-(4-((3,3'-dihydroxy-4'-((1-hydroxy-4-sulpho-2-naphthyl)azo)(1,1'-biphenyl)-4-yl)azo)-3-hydroxynaphthalene-2,7-disulphonato(7-)))dicuprate(3-)