127207-06-1 Copper (II) ethylglyoxal bis(N(4)-methylthiosemicarbazone) Copper, ((2,2'-(1-ethyl-1,2-ethanediylidene)bis(N-methylhydrazinecarbothioamidato))(2-)-N2,N2',S,S')-, (SP-4-4)- Cu-Etsm Ethylglyoxal bis(N(4)-methylthiosemicarbazone)copper (II) complex