20811-90-9 3-Phenylpropionic acid 1-benzyl-2,2,6,6-tetramethyl-4-piperidyl ester 4-Piperidinol, 1-benzyl-2,2,6,6-tetramethyl-, hydrocinnamate Hydrocinnamic acid, 1-benzyl-2,2,6,6-tetramethyl-4-piperidyl ester