2-amino-3-[3-(2-amino-3-hydroxy-3-oxopropyl)sulfanyl-4,5-dihydroxyphenyl]propanoic acid 2-amino-3-[3-(2-amino-3-hydroxy-3-oxo-propyl)sulfanyl-4,5-dihydroxy-phenyl]propanoic acid 2-amino-3-[3-[(2-amino-3-hydroxy-3-oxopropyl)thio]-4,5-dihydroxyphenyl]propanoic acid 2-amino-3-[3-[(2-amino-3-hydroxy-3-keto-propyl)thio]-4,5-dihydroxy-phenyl]propionic acid 19641-92-0 67240-27-1 CYSTEINYLDOPA L-Tyrosine, 3-((2-amino-2-carboxyethyl)thio)-5-hydroxy-, (R)-