1-Methyl-3-pyrrolidinyl phenyl(1-propynyl)glycolate A 1-Methyl-3-pyrrolidinyl phenyl(1-propynyl)glycolate B 101711-17-5 MANDELIC ACID, alpha-(1-PROPYNYL)-, 1-METHYL-3-PYRROLIDINYL ESTER alpha-(1-Propynyl)mandelic acid 1-methyl-3-pyrrolidinyl ester