1,1'-Carbonyldipiperidine 5395-04-0 N,N'-Carbonylbis(piperidine) N,N,N',N'-Bispentamethylene urea NSC3145 Piperidine, 1,1'-carbonylbis- Piperidine, 1,1'-carbonyldi- WLN: T6NTJ AV- AT6NTJ