Synonyms: Cuprate(2-), (3-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)diazenyl-kappaN1)-4-(hydroxy-kappaO)benzenesulfonato(4-))-, sodium;Copper, (3-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulfonato(2-))-, sodium salt;Cuprate(2-), (3-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulfonato(4-))-, sodium