The molecule is an amino acid zwitterion obtained from the transfer of a proton from the carboxy group to the amino group of D-dopa. Major microspecies at pH 7.3. It is an enantiomer of a L-dopa zwitterion. It is a tautomer of a D-dopa.
(2R)-2-azaniumyl-3-(3,4-dihydroxyphenyl)propanoate