Synonyms: Chromate(1-), (3-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)diazenyl-kappaN1)-4-(hydroxy-kappaO)benzenesulfonamidato(2-))(4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)benzenesulfonamidato(2-))-, sodium (1:1);Chromate(1-), (3-((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonamidato(2-))(4-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)benzenesulfonamidato(2-))-, sodium;Chromate(1-), (3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulfonamidato(2-))(4-hydroxy-3-((2-hydroxy-1-naphthalenyl)azo)benzenesulfonamidato(2-))-, sodium;Sodium (3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulphonamidato(2-))(4-hydroxy-3-((2-hydroxy-1-naphthyl)azo)benzenesulphonamidato(2-))chromate(1-)