Synonyms: Chromate(1-), bis(3-(4,5-dihydro-4-(2-(2-(hydroxy-kappaO)-5-methyl-3-nitrophenyl)diazenyl-kappaN1)-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)benzenesulfonamidato(2-))-, sodium (1:1);Chromate(1-), bis(3-(4,5-dihydro-4-((2-(hydroxy-kappaO)-5-methyl-3-nitrophenyl)azo-kappaN1)-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)benzenesulfonamidato(2-))-, sodium;Chromate(1-), bis(3-(4,5-dihydro-4-((2-hydroxy-5-methyl-3-nitrophenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonamidato(2-))-, sodium;Sodium bis(3-(4,5-dihydro-4-((2-hydroxy-5-methyl-3-nitrophenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzene-1-sulphonamidato(2-))chromate(1-)