37830-21-0 4-21-00-00046 (Beilstein Handbook Reference) BRN 0304134 Benzeneacetic acid, alpha-cyclopentyl-alpha-hydroxy-, 1-methyl-4-piperidinyl ester (9CI) EA 3443 MANDELIC ACID, alpha-CYCLOPENTYL-, 1-METHYL-4-PIPERIDYL ESTER N-Methyl-4-piperidyl cyclopentylphenylglycolate