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2-AMINO-3-(3-BROMO-PHENYL)-PROPIONIC ACID 2-AMINO-3-(2-CHLORO-PHENYL)-PROPIONIC ACID DL-Phenylalanine L-Alanine methyl ester hydrochloride L-Phenylalanine benzyl ester hydrochloride L-3,4-DIHYDROXYPHENYLALANINE METHYL ESTER HYDROCHLORIDE Methyl L-phenylalaninate hydrochloride tert-Butyl 3-phenyl-L-alaninate hydrochloride Aspartame Methyl L-tyrosinate