SMILES: C1=CC(=C(C=C1O)C(=O)C[C@@H](C(=O)[O-])[NH3+])N
Description: The molecule is tha amino acid zwitterion formed from 5-hydroxy-L-kynurenine by transfer of a proton from the carboxy to the amino group; principal microspecies at pH 7.3. It is a tautomer of a 5-hydroxy-L-kynurenine.