Synonyms: Chromate(1-), (3-(((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-(3-sulfophenyl)-1H-pyrazol-4-yl)methylene)amino-kappaN)-2-(hydroxy-kappaO)-5-nitrobenzenesulfonato(4-))-, sodium (1:1);Chromate(1-), (3-(((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-(3-sulfophenyl)-1H-pyrazol-4-yl)methylene)amino-kappaN)-2-(hydroxy-kappaO)-5-nitrobenzenesulfonato(4-))-, sodium;Chromate(1-), (3-(((4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)methylene)amino)-2-hydroxy-5-nitrobenzenesulfonato(4-))-, sodium;Sodium (3-(((4,5-dihydro-3-methyl-5-oxo-1-(3-sulphophenyl)-1H-pyrazol-4-yl)methylene)amino)-2-hydroxy-5-nitrobenzenesulphonato(4-))chromate(1-);chromium(3+) sodium 3-({(E)-[3-methyl-5-oxido-1-(3-sulfonatophenyl)-1H-pyrazol-4-yl]methylidene}amino)-5-nitro-2-oxidobenzenesulfonate (1:1:1)