1,1'-(2-Butynylene)dipiperidine 1,4-Dipiperidino-2-butyne 4-20-00-01207 (Beilstein Handbook Reference) 7498-32-0 BRN 0149049 NSC 407430 Piperidine, 1,1'-(2-butyne-1,4-diyl)bis- (9CI) Piperidine, 1,1'-(2-butynylene)di-