Synonyms: Cobaltate(2-),bis[3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxybenzenesulfonamidato(2-)]-,disodium, (OC-6-22')-; Cobaltate(2-), bis[3-[[4,5-dihydro-3-methyl-5-(oxo-kO)-1-phenyl-1H-pyrazol-4-yl]azo-kN1]-4-hydroxybenzenesulfonamidato(2-)]-,disodium, (OC-6-22')- (9CI); Benzenesulfonamide,3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-, cobaltcomplex