beta,3-Dihydroxytyrosine; Serine, 3-(3,4-dihydroxyphenyl)-; threo-2-Amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropionic acid; tyrosine, beta,3-dihydroxy-; (betaS)-beta,3-dihydroxy-D-tyrosine; (2S,3S)-2-ammonio-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoate