Indoleamine 2, 3-dioxygenase (IDO) is an intracellular enzyme that catalyzes the transformation of L-tryptophan to N-formylkynurenine, which is the first and rate-controlling step in the kynurenine pathway. IDO is a rate-limiting enzyme that catalyzes the degradation of tryptophan into kynurenine and is recognized to exert a tolerizing effect on T cells that require tryptophan to proliferate5. IDO also plays an important role in the activation and regulation of functionally quiescent regulatory T cells. IDO is a heme-containing enzyme that catalyzes the oxidative cleavage of 2,3 double bond of indole ring. IDO has the ability to inhibit T-cell activation by tryptophan starvation, whereas T-cell survival and proliferation are regulated by O2 free radicals and kynurenine derivatives. IDO plays a crucial role in autoimmunity,infections and malignancies. Indoleamine-2,3-dioxygenase (IDO) one of the most important immunoregulator enzyme responsible for metabolism of tryptophan as part of Kynurenin pathway. Tryptophan is catabolized in the tumor tissue by the rate-limiting enzyme IDO expressed in tumor cells or antigen presenting cells.


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IDO1-IN-12

IDO1-IN-12 is a potent and orally available IDO1 inhibitor.

  • CAS Number: 2379570-48-4
  • MF: C21H19F3N2O2
  • MW: 388.38
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IACS-8968 S-enantiomer

IACS-8968 (S-enantiomer) is the S-enantiomer of IACS-8968. IACS-8968 is a dual IDO and TDO inhibitor, with pIC50s of 6.43 for IDO and <5 for TDO, respectively.

  • CAS Number: 2239305-70-3
  • MF: C17H18F3N5O2
  • MW: 381.35
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

DP00477

DP00477 is a potent IDO1 (indoleamine 2,3-dioxygenase 1) inhibitor with an IC50 value of 7.0 µM. DP00477 has the potential for the research of cancer[1].

  • CAS Number: 169120-56-3
  • MF: C17H11ClF3N3OS
  • MW: 397.80
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Coptisine sulfate

Coptisine Sulfate is an alkaloid from Chinese goldthread, and acts as an efficient uncompetitive IDO inhibitor with a Ki value of 5.8 μM and an IC50 value of 6.3 μM[1].

  • CAS Number: 1198398-71-8
  • MF: C19H15NO8S
  • MW: 417.389
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NAMPT/IDO1-IN-1

NAMPT/IDO1-IN-1 is an orally active dual inhibitor of NAMPT and IDO1 with IC50s of 57.7 nM and 233 nM, respectively. NAMPT/IDO1-IN-1 blocks NAD+ biosynthesis, inhibits proliferation and migration of Paclitaxel (HY-B0015)- and FK866 (HY-50876)-resistant NSCLC cell lines (A549/R cells). NAMPT/IDO1-IN-1 has shown antitumor effects in mice and enhanced A549/R cell sensitivity to paclitaxel[1].

  • CAS Number: 2247884-06-4
  • MF: C23H24BrFN8O3
  • MW: 559.39
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Coptisine chloride

Coptisine chloride is an alkaloid from Chinese goldthread, and acts as an efficient uncompetitive IDO inhibitor with a Ki value of 5.8 μM and an IC50 value of 6.3 μM.

  • CAS Number: 6020-18-4
  • MF: C19H14ClNO4
  • MW: 355.772
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: 1.51g/cm3
  • Boiling Point: 601.5ºC at 760 mmHg
  • Melting Point: >258ºC (dec.)
  • Flash Point: 190.4ºC

IDO-IN-12

IDO-IN-12 is an indoleamine 2,3-dioxygenase (IDO) inhibitor extracted from patent WO 2017181849 A1.

  • CAS Number: 1888341-29-4
  • MF: C13H11BrFN5O3S
  • MW: 416.23
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO1-IN-16

IDO1-IN-16 (I-1) is an IDO1 inhibitor targeting holo-IDO1, with an IC50 of 127 nM[1].

  • CAS Number: 2677054-63-4
  • MF: C25H35BrFN5O2
  • MW: 536.48
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO1/TDO-IN-4

IDO1/TDO-IN-4 is a potent IDO1/TDO dual inhibitor, with IC50 values of 3.53 μM (IDO1) and 1.15 μM (TDO). IDO1/TDO-IN-4 forms hydrogen bond with IDO1, and π−π stacking interaction with TDO. IDO1/TDO-IN-4 can be used in the research of depression, and depression-induced infectious, metabolic, and autoimmune disorders[1].

  • CAS Number: 461424-21-5
  • MF: C14H10N4
  • MW: 234.26
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Lacto-N-fucopentaose III

Lacto-N-fucopentaose III (LNFP-III) is an immune modulator. Lacto-N-fucopentaose III reduces the severity of experimental autoimmune encephalomyelitis (EAE) and CNS inflammation[1].

  • CAS Number: 25541-09-7
  • MF: C32H55NO25
  • MW: 853.77
  • Catalog: Aldehyde Dehydrogenase (ALDH)
  • Density: 1.71g/cm3
  • Boiling Point: 1264.6ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 718.6ºC

Palmatine hydroxide

Palmatine hydroxide is an orally active and irreversible indoleamine 2,3-dioxygenase 1 (IDO-1) inhibitor with IC50s of 3 μM and 157μM against HEK 293-hIDO-1 and rhIDO-1, respectively. Palmatine hydroxide can also inhibit West Nile virus (WNV) NS2B-NS3 protease in an uncompetitive manner with an IC50 of 96 μM. Palmatine hydroxide shows anti-cancer, anti-oxidation, anti-inflammatory, neuroprotection, antibacterial, anti-viral activities[1][2][3][4][5].

  • CAS Number: 131-04-4
  • MF: C21H23NO5
  • MW: 369.41100
  • Catalog: Bacterial
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

PF-06840003

PF-06840003 is a highly selective orally bioavailable IDO-1 inhibitor.

  • CAS Number: 198474-05-4
  • MF: C12H9FN2O2
  • MW: 232.21000
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO1-IN-20

Hy-146215 is an enzyme that catalyzes the oxidative metabolism of tryptophan. It can immunosuppress tumors in the tumor microenvironment.

  • CAS Number: 2415246-15-8
  • MF: C15H19BrFN7O4S
  • MW: 492.32
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO-IN-1

IDO-IN-1 is a potent indoleamine 2,3-dioxygenase (IDO) inhibitor with an IC50 of 59 nM.

  • CAS Number: 914638-30-5
  • MF: C9H7BrFN5O2
  • MW: 316.08700
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NU223612

NU223612 is a potent PROTAC (PROTACs) that degrades indoleamine 2,3-dioxygenase 1 (IDO1) (Indoleamine 2,3-Dioxygenase (IDO)) with a Kd of 640 nM. NU223612 potently degrades the IDO1 protein through CRBN-mediated proteasomal degradation. NU223612 is bound to CRBN with an affinity of 290 nM. NU223612 can cross the blood-brain barrier (BBB)[1].

  • CAS Number: 2759420-43-2
  • MF: C49H55FN6O9
  • MW: 890.99
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ZC0101

ZC0101 is a potent, orally active IDO1 and TrxR dual inhibitor with IC50 values of 0.084 μM and 7.98 μM, respectively. ZC0101 effectively induces apoptosis and ROS accumulation in cancer cells[1].

  • CAS Number: 2541604-52-6
  • MF: C17H15N3O2
  • MW: 293.32
  • Catalog: Apoptosis
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

BMS-986242

BMS-986242 is an orally active, potent and selective indoleamine-2,3-dioxygenase 1 (IDO1) inhibitor. BMS-986242 can be used for the research of cancer[1].

  • CAS Number: 1923844-48-7
  • MF: C24H24ClFN2O
  • MW: 410.91
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO-IN-16

IDO-IN-16 (compound 5) is an IDO inhibitor, with an IC50 of 36 nM[1].

  • CAS Number: 2663591-36-2
  • MF: C22H21F3N4O
  • MW: 414.42
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO/TDO-IN-1

IDO/TDO-IN-1 (compound 25) is a highly potent and orally active dual indoleamine-2,3-dioxygenase (IDO) and tryptophan 2,3-dioxygenase (TDO) inhibitor with IC50s of 9.7 and 47 nM, respectively [1].

  • CAS Number: 2033173-01-0
  • MF: C25H24FN5
  • MW: 413.49
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NUCC-0223619

NUCC-0223619 is an IDO1 inhibitor, induce degradation of IDO protein. NUCC-0223619 can be used to synthesis PROTAC[1].

  • CAS Number: 1923835-78-2
  • MF: C24H24ClFN2O2
  • MW: 426.91
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

(R)-IDO/TDO-IN-1

(R)-IDO/TDO-IN-1 (compound 25) is an indoleamine-2,3-dioxygenase (IDO) inhibitor, with good pharmacokinetic properties. (R)-IDO/TDO-IN-1 exhibits anti-tumor activity in MC38 xenograft model. (R)-IDO/TDO-IN-1 shows synergistic effect with anti-PD-1 monoclonal antibody (SHR-1210)[1].

  • CAS Number: 2033173-00-9
  • MF: C25H24FN5
  • MW: 413.49
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO1/2-IN-1

IDO1/2-IN-1 (compound 4t) is the first potent IDO1/IDO2 dual inhibitor with IC50s of 28 nM and 144 nM for IDO1 and IDO2, respectively. IDO1/2-IN-1 exhibits antitumor activies. Orally active[1].

  • CAS Number: 2310286-45-2
  • MF: C16H18BrFN8O4
  • MW: 485.27
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO-IN-3

IDO-IN-3 is a potent indoleamine 2,3-dioxygenase (IDO) inhibitor with an IC50 of 290 nM.

  • CAS Number: 2070018-30-1
  • MF: C11H12BrFN6O2
  • MW: 359.15
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO1-IN-19

IDO1-IN-19 (Compound 17) is a potent inhibitor of IDO1. IDO1-IN-19 has the potential for the research of cancer diseases[1].

  • CAS Number: 2328099-11-0
  • MF: C25H22F4N2O3
  • MW: 474.45
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO-IN-15

IDO-IN-15 is an IDO1 inhibitor (IC50 < 0.51 nM).

  • CAS Number: 2433886-87-2
  • MF: C29H39N5O4
  • MW: 521.65
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

IDO-IN-14

IDO-IN-14 is an IDO inhibitor with an IC50 value of 0.6928 nM.

  • CAS Number: 2568302-02-1
  • MF: C23H23ClN4O2
  • MW: 422.91
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Imsamotide

Imsamotide (IDO194-214) is a Indoleamine 2,3-Dioxygenase (IDO) peptide with sequences of DTLLKALLEIASCLEKALQVF, the IDO194-214. Imsamotide is also an immunological agent for active immunization, as well as an antineoplastic agent[1][2].

  • CAS Number: 2130836-27-8
  • MF: C106H180N24O31S
  • MW: 2318.76
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

INCB024360 analogue

IDO5L is a potent indoleamine 2,3-dioxygenase (IDO) inhibitor with an IC50 of 67 nM.

  • CAS Number: 914471-09-3
  • MF: C9H7ClFN5O2
  • MW: 271.636
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: 1.8±0.1 g/cm3
  • Boiling Point: 504.7±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 259.0±32.9 °C

Navoximod

Navoximod is a potent IDO (indoleamine-(2,3)-dioxygenase) pathway inhibitor with Ki/EC50 of 7 nM/75 nM.

  • CAS Number: 1402837-78-8
  • MF: C18H21FN2O2
  • MW: 316.370
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 555.4±35.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 289.7±25.9 °C

IDO-IN-8

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

  • CAS Number: 1402837-77-7
  • MF: C18H21FN2O2
  • MW: 316.370
  • Catalog: Indoleamine 2,3-Dioxygenase (IDO)
  • Density: 1.4±0.1 g/cm3
  • Boiling Point: 555.4±35.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 289.7±25.9 °C