Synonyms: Cobaltate(5-),bis[4-[4-[[4-[[[3-[[4,5-dihydro-3-methyl-5-(ox-kO)-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo-kN1]-4-(hydroxy-kO)phenyl]sulfonyl]amino]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(4-)]-,pentasodium; Cobaltate(5-),bis[4-[4-[[4-[[[3-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-4-hydroxyphenyl]sulfonyl]amino]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(4-)]-,pentasodium (9CI); Benzenesulfonic acid,4-[4-[[4-[[[3-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-4-hydroxyphenyl]sulfonyl]amino]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-,cobalt complex