12213-13-7 Copper bis(dithizonate) Copper dithizonate Copper, bis(phenyldiazenecarbothioic acid 2-phenylhydrazidato)- Copper, bis(phenyldiazenecarbothioic acid 2-phenylhydrazidato)-, (SP-4-1)- Copper, bis[(phenylazo)thioformic acid 2-phenylhydrazidato]- NSC293938