The molecule is the L-alpha-amino acid zwitterion that results from the transfer of a proton from the carboxylic acid group to the alpha-amino group of L-6'-bromotryptophan. The major species at pH 7.3. It is a L-alpha-amino acid zwitterion and an aromatic L-alpha-amino acid zwitterion. It is a tautomer of a L-6'-bromotryptophan.
(2S)-2-azaniumyl-3-(6-bromo-1H-indol-3-yl)propanoate