1-Allyl-4-phenyl-4-carbethoxypiperidine 1-Allyl-4-phenylisonipecotic acid ethyl ester 2372-70-5 4-22-00-01009 (Beilstein Handbook Reference) BRN 0249362 ISONIPECOTIC ACID, 1-ALLYL-4-PHENYL-, ETHYL ESTER WIN 7681