1,1'-(1,2-Ethanediyl)bispiperidine 1,1'-Ethylenedipiperidine 1,2-Dipiperidinylethane 1932-04-3 Dipiperidinoethane EINECS 217-692-7 NSC 59292 Piperidine, 1,1'-(1,2-ethanediyl)bis- Piperidine, 1,1'-ethylenedi-