Synonyms: Glycine, N,N-1,2-ethanediylbis(N-(carboxymethyl)-, cobalt complex, hydrazinium salt;Dihydrazinium ((N,N'-ethylenebis(N-(carboxymethyl)glycinato))(4-)-N,N',O,O',ON,ON')cobaltate(2-);Hydrazinium(1+), (OC-6-21)-((N,N'-1,2-ethanediylbis(N-((carboxy-kappaO)methyl)glycinato-kappaN,kappaO))(4-))cobaltate(2-) (2:1);cobalt(2+) hydrazinium 2,2',2'',2'''-(ethane-1,2-diyldinitrilo)tetraacetate (1:2:1)