Synonyms: Cobaltate(1-),bis[2-[(2-hydroxy-5-nitrophenyl)azo]-3-oxo-N-phenylbutanamidato(2-)]-,hydrogen;Cobaltate(1-), bis[2-[[2-(hydroxy-kO)-5-nitrophenyl]azo-kN1]-3-(oxo-kO)-N-phenylbutanamidato(2-)]-, hydrogen (9CI);Hydrogen bis[2,3-dioxobutyranilide 2-[(2-hydroxy-5-nitrophenyl)hydrazonato(2-)]]cobaltate(III)(7CI);Butanamide, 2-[(2-hydroxy-5-nitrophenyl)azo]-3-oxo-N-phenyl-, cobaltcomplex;2-[(2-Hydroxy-5-nitrophenyl)azo]-3-oxo-N-phenylbutanamide cobaltcomplex (2:1);C.I. Solvent Orange 45;Hydrogenbis[2-[(2-hydroxy-5-nitrophenyl)azo]acetoacetanilidato(2-)]cobaltate(III);Vali Fast Yellow 3108;