71566-26-2 73334-11-9 Bis(2-((2-hydroxy-5-nitrophenyl)azo)-3-oxo-N-phenylbutanamidato(2-))cobaltate(1-), sodium salt Cobaltate(1-), bis(2-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-3-(oxo-kappaO)-N-phenylbutanamidato(2-))-, sodium EINECS 275-627-8 Sodium bis(2-((2-hydroxy-5-nitrophenyl)azo)-3-oxo-N-phenylbutyramidato(2-))cobaltate(1-)