"C0013023" . . . "Dihydroxyphenylalanine"@en . . . . "beta-Hydroxytyrosine"@en . "3,4-Dihydroxyphenylalanine"@en . "3-Hydroxy-DL-tyrosine"@en . "Dihydroxyphenylalanine"@en . "D004295" . "DL-Tyrosine, 3-hydroxy-"@en . . . "Dopa"@en .