73297-24-2 Cuprate(2-), (4-(4-((4-((4,5-dihydro-3-methyl-1-(2-methyl-4-sulfophenyl)-5-oxo-1H-pyrazol-4-yl)azo)-2-(hydroxy-kappaO)phenyl)azo-kappaN1)-4,5-dihydro-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)-3-methylbenzenesulfonato(4-))-, disodium