Synonyms: Cuprate(3-), (2-(4,5-dihydro-4-(2-(2-(hydroxy-kappaO)-5-sulfo-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)diazenyl-kappaN1)-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)-1,4-benzenedisulfonato(5-))-, sodium (1:3);Cuprate(3-), (2-(4,5-dihydro-4-((2-(hydroxy-kappaO)-5-sulfo-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)azo-kappaN1)-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)-1,4-benzenedisulfonato(5-))-, trisodium;Trisodium (2-(4,5-dihydro-4-((2-hydroxy-5-sulpho-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzene-1,4-disulphonato(5-))cuprate(3-);copper(2+) sodium 2-{3-methyl-5-oxido-4-[(E)-{2-oxido-5-sulfonato-3-[(2,5,6-trichloropyrimidin-4-yl)amino]phenyl}diazenyl]-1H-pyrazol-1-yl}benzene-1,4-disulfonate (1:3:1)