68340-93-2 Copper (II) pyruvaldehyde bis(N(4)-dimethylthiosemicarbazone) Copper, (((2,2'-ethanediylidene)bis(N,N-dimethylhydrazinecarbothioamidato))(2-)-N2,N2',S,S')-, (SP-4-2)- Cu-Ptsm2 Pyruvaldehyde bis(N(4)-dimethylthiosemicarbazone)copper (II) complex