Synonyms: Cobaltate(1-), bis(2-(2-(2-(hydroxy-kappaO)-5-nitrophenyl)diazenyl-kappaN1)-3-(oxo-kappaO)-N-phenylbutanamidato(2-))-, hydrogen, compd. with 1-butanamine (1:1:1);Cobaltate(1-), bis(2-((2-hydroxy-5-nitrophenyl)azo)-3-oxo-N-phenylbutanamidato(2-))-, hydrogen, compd. with butylamine (1:1);Cobaltate(1-), bis(2-((2-hydroxy-5-nitrophenyl)azo)-3-oxo-N-phenylbutanamidato(2-))-, hydrogen, compd. with 1-butanamine (1:1);Hydrogen bis(2-((2-hydroxy-5-nitrophenyl)azo)-3-oxo-N-phenylbutyramidato(2-))cobaltate(1-), compound with butylamine (1:1);cobalt(3+) hydrogen (1Z,2E)-2-[2-(5-nitro-2-oxidophenyl)hydrazinylidene]-3-oxo-N-phenylbutanimidate - butan-1-amine (1:1:2:1)