Amg-1 is a potent, reversible and selective indoleamine 2,3-dioxygenase (IDO1) inhibitor (IC50 = 3.0 μM) . Amg-1 exhibits >80-fold selectivity over IDO2 (IC50 > 250 μM) and >20-fold selective over TDO (IC50 > 62.5 μM) . Amg-1 can be used for cancer, hypotension, and neurological disorders research[1].