1-(5-Piperidino-2,4-pentadienylidene)piperidinium chloride hydrate 22966-87-6 NSC 161507 Piperidinium, 1-(5-(1-piperidinyl)-2,4-pentadienylidene)-, chloride (9CI) Piperidinium, 1-(5-piperidino-2,4-pentadienylidene)-, chloride (8CI) Piperidinium, 1-(5-piperidino-2,4-pentadienylidene)-, chloride, hydrate