1-Methyl-4-piperidyl phenyl(1-hexynyl)glycolate 3-OCTYNOIC ACID, 2-HYDROXY-2-PHENYL-, 1-METHYL-4-PIPERIDYL ESTER 92956-52-0 alpha-(3-Methyl-1-hexynyl)mandelic acid 1-methyl-4-piperidyl ester