WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 206160

CAS#: 110117-83-4

Description: Indoximod, also known as NLG8189 and D-1MT, is a methylated tryptophan with anti-immunosuppressive activity. 1-methyl-d-tryptophan inhibits the enzyme indoleamine 2,3-dioxygenase (IDO), which degrades the essential amino acid tryptophan, and may increase or maintain tryptophan levels important to T cell function. Tryptophan depletion is associated with immunosuppression involving T cell arrest and anergy.

Chemical Structure

CAS# 110117-83-4

Theoretical Analysis

MedKoo Cat#: 206160
Name: Indoximod
CAS#: 110117-83-4
Chemical Formula: C12H14N2O2
Exact Mass: 218.10553
Molecular Weight: 218.25
Elemental Analysis: C, 66.04; H, 6.47; N, 12.84; O, 14.66

Price and Availability

Size Price Availability Quantity
200.0mg USD 150.0 Same day
500.0mg USD 250.0 Same day
1.0g USD 450.0 Same day
5.0g USD 950.0 Same day
10.0g USD 1450.0 Same day
20.0g USD 1950.0 Same day
50.0g USD 3450.0 Same day
100.0g USD 5450.0 2 weeks
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Synonym: Indoximod; NLG8189; NLG 8189; NLG-8189; D1MT; 1-methyl-D-tryptophan.

IUPAC/Chemical Name: (R)-2-amino-3-(1-methyl-1H-indol-3-yl)propanoic acid


InChi Code: InChI=1S/C12H14N2O2/c1-14-7-8(6-10(13)12(15)16)9-4-2-3-5-11(9)14/h2-5,7,10H,6,13H2,1H3,(H,15,16)/t10-/m1/s1

SMILES Code: N[C@H](CC1=CN(C)C2=CC=CC=C12)C(O)=O

Appearance: White to off-white solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 218.25 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Yim HS, Choi KM, Kim B, Jung ID, Park YM, Kang YK, Lee MG. Effect of 1-methyl-D-tryptophan and adoptive transfer of dendritic cells on polymicrobial sepsis induced by cecal content injection. Microbiol Immunol. 2013 Sep;57(9):633-9. doi: 10.1111/1348-0421.12081. PubMed PMID: 23841524.

2: Opitz CA, Litzenburger UM, Opitz U, Sahm F, Ochs K, Lutz C, Wick W, Platten M. The indoleamine-2,3-dioxygenase (IDO) inhibitor 1-methyl-D-tryptophan upregulates IDO1 in human cancer cells. PLoS One. 2011;6(5):e19823. doi: 10.1371/journal.pone.0019823. Epub 2011 May 20. PubMed PMID: 21625531; PubMed Central PMCID: PMC3098827.

3: Vasil'eva ED, Nikolin VP, Popova NA, Lushnikova EL, Kaledin VI. Inhibitor of indoleamine-2,3-dioxygenase 1-methyl-D-tryptophan can stimulate the growth of immunogenic tumors. Bull Exp Biol Med. 2010 Oct;149(5):625-7. PubMed PMID: 21165403.

4: Jia L, Schweikart K, Tomaszewski J, Page JG, Noker PE, Buhrow SA, Reid JM, Ames MM, Munn DH. Toxicology and pharmacokinetics of 1-methyl-d-tryptophan: absence of toxicity due to saturating absorption. Food Chem Toxicol. 2008 Jan;46(1):203-11. Epub 2007 Aug 10. PubMed PMID: 17868966; PubMed Central PMCID: PMC2744343.


200.0mg / USD 150.0

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