1-Methyl-4-piperidyl cyclobutyl(1-propynyl)glycolate 101030-74-4 3-Pentynoic acid, 2-cyclobutyl-2-hydroxy-, 1-methyl-4-piperidyl ester CYCLOBUTANEGLYCOLIC ACID, alpha-(1-PROPYNYL)-, 1-METHYL-4-PIPERIDYL ESTER