Synonyms: Ammonium[(ethylenedinitrilo)tetraacetato]cuprate(II) (7CI);Cuprate(2-),[[N,N'-1,2-ethanediylbis[N-(carboxymethyl)glycinato]](4-)-N,N',O,O',ON,ON']-,diammonium, (OC-6-21)-;Cuprate(2-), [[N,N'-1,2-ethanediylbis[N-[(carboxy-kO)methyl]glycinato-kN,kO]](4-)]-, diammonium, (OC-6-21)- (9CI);Versene AG;