SMILES: C1=CC2=C(C=C1Br)C(=CN2)CC(C(=O)[O-])[NH3+]
Description: The molecule is an alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of 5-bromotryptophan; major species at pH 7.3. It is a tautomer of a 5-bromotryptophan.