1-Methyl-4-piperidyl phenyl(3-methyl-1-butynyl)glycolate 16862-13-8 BRN 1493814 Benzeneacetic acid, alpha-hydroxy-alpha-(3-methyl-1-butynyl)-, 1-methyl-4-piperidinyl ester MANDELIC ACID, alpha-(3-METHYL-1-BUTYNYL)-, 1-METHYL-4-PIPERIDYL ESTER N-Methyl-4-piperidylisopentynylphenylglycolate alpha-(3-Methyl-1-butynyl)mandelic acid 1-methyl-4-piperidyl ester