(E)-3-(2,2,6,6-Tetramethyl-4-oxo-1-piperidinyl)-2-propenoic acid methyl ester 110998-13-5 2-Propenoic acid, 3-(2,2,6,6-tetramethyl-4-oxo-1-piperidinyl)-, methyl ester, (E)- BRN 5534878 trans-N-beta-(2,2,6,6-Tetramethyl-4-oxo-1-piperidyl)acrylic acid methyl ester