1,2,2,6-Tetramethyl-4-piperidyl phenyl(isopropenyl)glycolate 101710-98-9 MANDELIC ACID, alpha-(ISOPROPENYL)-, 1,2,2,6-TETRAMETHYL-4-PIPERIDYL ESTER alpha-(Isopropenyl)mandelic acid 1,2,2,6-tetramethyl-4-piperidyl ester