17551-76-7 BRN 0821507 N,N'-Bis(N-beta-piperazinoethyl)-dithiooxamide NSC 50077 Oxamide, N,N'-bis(2-(1-piperazinyl)ethyl)dithio- (8CI) Piperazine, 1,1-dithiooxalyldiiminodiethylenedi-