SMILES: C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)[NH3+]
Description: The molecule is the L-enantiomer of tryptophanium. It has a role as an animal metabolite and a plant metabolite. It is a conjugate acid of a L-tryptophan. It is an enantiomer of a D-tryptophanium.