DL-β-3,4-DIHYDROXYPHENYL-ALANINEDL-DopaDL-3-Hydroxytyrosine3-(3,4-Dihydroxyphenyl)-DL-alanineDL-3,4-DIHYDROXYPHENYLALANINE2-amino-3-(3,4-dihydroxyphenyl)propanoic acid(S)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid3,4-Dihydroxy-DL-phenylalanine3,4-二羟苯基-DL-苯基丙氨酸3-Hydroxy-DL-tyrosine(+-)-dopa3-hydroxy-DL-tyrosineDL-dihydroxyphenylalanineDL-3,4-dopa3-hydroxytyrosine3',4'-dihydroxyphenylalanine(+-)-3-(3,4-dihydroxyphenyl)alaninedl-beta-(3,4-dihydroxyphenyl)-alpha-alanine(R,S)-dopaDL-beta-(3,4-dihydroxyphenyl)alaninedopabeta-(3,4-dihydroxyphenyl)-DL-alpha-alanineDL-dioxyphenylalanine