Synonyms: Cobaltate(1-), bis(3-(2-(1-(2,5-dichlorophenyl)-4,5-dihydro-3-methyl-5-(oxo-kappaO)-1H-pyrazol-4-yl)diazenyl-kappaN1)-4-(hydroxy-kappaO)benzenesulfonamidato(2-))-, sodium (1:1);Pyrazole, 4-((5-(aminosulfonyl)-2-hydroxyphenyl)azo)-1-(2,5-dichlorophenyl)-5-hydroxy-3-methyl, cobalt complex, sodium salt;Cobaltate(1-), bis(3-((1-(2,5-dichlorophenyl)-4,5-dihydro-3-methyl-5-(oxo-kappaO)-1H-pyrazol-4-yl)azo-kappaN1)-4-(hydroxy-kappaO)benzenesulfonamidato(2-))-, sodium;Cobaltate(1-), bis(3-((1-(2,5-dichlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulfonamidato(2-))-, sodium;Sodium bis(3-((1-(2,5-dichlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)-4-hydroxybenzenesulphonamidato(2-))cobaltate(1-)