53733-94-1 EINECS 258-731-8 Methyl N-(3-methoxy-3-oxopropyl)-N-phenyl-beta-alaninate N-(2-Carboxyethyl)-N-phenyl-beta-alanine, dimethyl ester beta-Alanine, N-(3-methoxy-3-oxopropyl)-N-phenyl-, methyl ester