Synonyms: Chromate(2-), (2,4-dihydro-4-(2-(2-(hydroxy-kappaO)-5-methyl-3-nitrophenyl)diazenyl-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)(3-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)diazenyl-kappaN1)-4-(hydroxy-kappaO)-5-nitrobenzenesulfonato(3-))-, sodium (1:2);4-Hydroxy-3-((3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)azo)-5-nitrobenzenesulfonnic acid, 4-(2-hydroxy-5-methyl-3-nitrophenyl)azo)-3-methyl-1-phenyl-1H-pyrazol-5-one, chromium(III) complex, disodium salt;Chromate(2-), (2,4-dihydro-4-((2-(hydroxy-kappaO)-5-methyl-3-nitrophenyl)azo-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)(3-((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)azo-kappaN1)-4-(hydroxy-kappaO)-5-nitrobenzenesulfonato(3-))-, disodium;Chromate(2-), (2,4-dihydro-4-((2-hydroxy-5-methyl-3-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))(3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)- 4-hydroxy-5-nitrobenzenesulfonato(3-))-, disodium;Chromate(2-), (2,4-dihydro-4-((2-hydroxy-5-methyl-3-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))(3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxy-5-nitrobenzenesulfonato(3-))-, disodium;chromic; 5-(dioxidoamino)-3-[(3-methyl-5-oxo-1-phenyl-pyrazol-4-ylidene)hydrazono]-4-oxo-cyclohexa-1,5-diene-1-sulfonate; [(3-methyl-5-nitro-6-oxo-1-cyclohexa-2,4-dienylidene)amino]-(3-methyl-5-oxo-1-phenyl-pyrazol-2-id-4-yl)azanide