3,4-Diacetyloxy-L-phenylalanyl-3,4-diacetyloxy-L-phenylalanine benzyl ester hydrochloride 63983-43-7 Alanine, N-(3,4-diacetoxy-L-phenylalanyl)-3-(3,4-diacetoxyphenyl)-, benzyl ester, hydrochloride, L-