Synonyms: Chromate(1-), bis(2,4-dihydro-4-(2-(2-(hydroxy-kappaO)-4-nitrophenyl)diazenyl-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)-, sodium (1:1);Chromate(1-), bis(2-((5-hydroxy-3-methyl-1-phenylpyrazol-4-yl)azo)-5-nitrophenolato(2-))-, sodium;Chromate(1-), bis(2,4-dihydro-4-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-)-kappaO3)-, sodium;Chromate(1-), bis(2,4-dihydro-4-((2-hydroxy-4-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))-, sodium;Sodium bis(2,4-dihydro-4-((2-hydroxy-4-nitrophenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-onato(2-))chromate(1-);chromium(3+) sodium 5-methyl-4-[(4-nitro-6-oxocyclohexa-2,4-dien-1-ylidene)diazanidyl]-3-oxo-2-phenyl-2,3-dihydropyrazol-1-ide ({4-[(3-methyl-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene)hydrazinylidene]-3-oxocyclohexa-1,5-dien-1-yl}imino)dioxidanide (1:1:1:1)