Synonyms: Chromate(5-), bis(4-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-(3-sulfophenyl)-1H-pyrazol-4-yl)diazenyl-kappaN1)-3-(hydroxy-kappaO)-1-naphthalenesulfonato(4-))-, hydrogen (1:5);Chromate(5)-, bis(4-((4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo)-3-hydroxy-1-naphthalenesulfonato(4-))-, pentahydrogen;Chromate(5-), bis(4-((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo-kappaN1)-3-(hydroxy-kappaO)-1-naphthalenesulfonato(4-))-, pentahydrogen;Pentahydrogen bis(4-((4,5-dihydro-3-methyl-5-oxo-1-(3-sulphophenyl)-1H-pyrazol-4-yl)azo)-3-hydroxynaphthalene-1-sulphonato(4-))chromate(5-);chromium(3+) hydrogen 4-{(E)-[3-methyl-5-oxido-1-(3-sulfonatophenyl)-1H-pyrazol-4-yl]diazenyl}-3-oxidonaphthalene-1-sulfonate (1:5:2)