Synonyms: Cuprate(4-),[m3-[7-[[6-[[4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3,3'-dihydroxy[1,1'-biphenyl]-4-yl]azo]-1,5-dihydroxy-7-sulfo-2-naphthalenyl]azo]-8-hydroxy-1,3,6-naphthalenetrisulfonato(10-)]]tri-,tetrahydrogen; Cuprate(4-), [m3-[7-[[6-[[4'-[[4,5-dihydro-3-methyl-5-(oxo-kO)-1-phenyl-1H-pyrazol-4-yl]azo-kN1]-3,3'-di(hydroxy-kO)[1,1'-biphenyl]-4-yl]azo-kN1]-1,5-di(hydroxy-kO)-7-sulfo-2-naphthalenyl]azo-kN1]-8-(hydroxy-kO)-1,3,6-naphthalenetrisulfonato(10-)]]tri-,tetrahydrogen (9CI); 1,3,6-Naphthalenetrisulfonic acid,7-[[6-[[4'-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3,3'-dihydroxy[1,1'-biphenyl]-4-yl]azo]-1,5-dihydroxy-7-sulfo-2-naphthalenyl]azo]-8-hydroxy-,copper complex