BMS-986205 is an optimized indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor, is well tolerated with potent pharmacodynamic activity, alone and in combination with nivolumab in advanced cancers in a phase 1/2a trial

Epacadostat (INCB024360) is a potent and selective indoleamine 2,3-dioxygenase (IDO1) inhibitor with IC50 of 10 nM. Phase 2.

IDO-IN-1 is an indoleamine-2,3-dioxygenase (IDO) inhibitor with IC50 of 59 nM, shows activity in Hela cell (IC50=12 nM).

IDO-IN-2 is an IDO inhibitor extracted from patent WO/2015031295 A1, compound example 1, has IC50 values of 0.068 μM in HeLa cell and 0.16 μM in HEK293 cell.

INCB024360 is a potent IDO1 inhibitor(IC50=10 nM) with desirable pharmaceutical properties, which is poised to start clinical trials in cancer patients.

NLG-8189 is an inhibitor of IDO and INDOL1 (IDO2)

PF-06840003 is an orally available hydroxyamidine and inhibitor of indoleamine 2,3-dioxygenase 1 (IDO1),with potential immunomodulating and antineoplastic activities.

Roxyl-WL is a highly potent and selective inhibitor of IDO1 with IC50 of 1 nM.

(Rac)-IDO1-IN-5 (Example 1) is a racemate of IDO1-IN-5. IDO1-IN-5 is a potent, selective and brain penetrated inhibitor of Indoleamine 2,3-Dioxygenase 1 (IDO1) activity, binds to apo-IDO1 lacking heme rather than mature heme-bound IDO1.

(S)-IDO1-IN-5 (Example 1B) is an active S-isomer of IDO1-IN-5. (S)-IDO1-IN-5 binds to IDOL with an IC50 value less than 1.5 µΜ. IDO1-IN-5 is a potent, selective and brain penetrated inhibitor of Indoleamine 2,3-Dioxygenase 1 (IDO1) activity, binds to apo-IDO1 lacking heme rather than mature heme-bound IDO1.

IDO1-IN-2 (compound 16) is a potent and selective IDO1 inhibitor with IC50s of 81 nM, 59 nM (mouse) and 28 nM (rat), respectively. IDO1-IN-2 has anti-cancer activity.

(Rac)-Indoximod (1-Methyl-DL-tryptophan) is an indoleamine 2,3-dioxygenase (IDO) inhibitor. Co-treatment with IFN-γ and (Rac)-Indoximod markedly reduces the activity of human cardiac myofibroblasts (hCMs) expressing α-SMA and induces apoptosis through up-regulating the IRF-1, Fas, and FasL genes.

IDO-IN-6 (NLG-1486) is an indoleamine 2,3-dioxygenase (IDO) extracted from patent WO WO2012142237A1, Compound 1486, has an IC50 of <1 μM.

IDO-IN-8 (NLG-1487) is an indoleamine 2,3-dioxygenase (IDO) extracted from patent WO WO2012142237A1, compound 1487, has an IC50 of 1-10 μM.