TTD_Target_ID Target_Name TTD_Drug_ID Drug_Name Drug_Highest_Status Drug_PubchemID Molecular_Formula Molecular_Weight Canonical_SMILES Activity Binder_Type T44818 Tryptophan 2,3-dioxygenase D05EJG L-Tryptophan Approved 6305 C11H12N2O2 204.22 C1=CC=C2C(=C1)C(=CN2)C[C@@H](C(=O)O)N Ki = 11500000 nM Non binder