trisodium [μ-[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-)
CAS No. 68140-32-9