(E)-N-(1-Oxo-3-phenyl-2-propenyl)-DL-valine methyl ester 127750-57-6 BRN 4189224 DL-Valine, N-(1-oxo-3-phenyl-2-propenyl)-, methyl ester, (E)- N-Cinnamoyl-D,L-valine methyl ester