2-Picoline, 5-(3-piperidino-1-propynyl)- 5-(3-Piperidino-1-propynyl)-2-picoline 5-22-10-00016 (Beilstein Handbook Reference) 73771-10-5 BRN 0475235 NSC 220031 Pyridine, 2-methyl-5-(3-(1-piperidinyl)-1-propynyl)- (9CI)