1-Methyl-4-piperidyl cyclohexyl(1-propynyl)glycolate 92956-72-4 Cyclohexaneacetic acid, alpha-hydroxy-alpha-1-propynyl-, 1-methyl-4-piperidinyl ester Cyclohexaneglycolic acid, alpha-(1-propynyl)-, 1-methyl-4-piperidyl ester