(E)-N-(1-Oxo-3-phenyl-2-propenyl)-DL-norleucine methyl ester 127750-58-7 BRN 4192017 DL-Norleucine, N-(1-oxo-3-phenyl-2-propenyl)-, methyl ester, (E)- N-Cinnamoyl-D,L-norleucine methyl ester