23050-00-2 3-Phenylpropionic acid 1,2,2,6,6-pentamethyl-4-piperidyl ester 4-Piperidinol, 1,2,2,6,6-pentamethyl-, hydrocinnamate Hydrocinnamic acid, 1,2,2,6,6-pentamethyl-4-piperidyl ester