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Cat. No. M9085
Indoximod Structure

NLG-8189; D1MT; 1-methyl-D-tryptophan

Size Price Availability Quantity
100mg USD 126  USD140 In stock
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

The IDO inhibitor 1-methyl-tryptophan exists in two stereoisomers with potentially different biological properties. The L isomer is the more potent inhibitor of IDO activity using the purified enzyme and in HeLa cell–based assays. However, the D isomer is significantly more effective in reversing the suppression of T cells created by IDO-expressing dendritic cells. Indoximod (D-1MT, NLG8189) 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. Oral administration of dl-1-methyl-tryptophan in combination with paclitaxel can elicit regression of autochthonous breast tumors.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 218.25
Formula C12H14N2O2
CAS Number 110117-83-4
Purity >98%
Solubility DMSO 1 mg/mL (Need ultrasonic and warming)
Storage at -20°C

Inhibition of indoleamine 2,3-dioxygenase in dendritic cells by stereoisomers of 1-methyl-tryptophan correlates with antitumor responses
De-Yan Hou, et al. Cancer Res. 2007 Jan 15;67(2):792-801. PMID: 17234791.

Related IDO Products

1-Methyl-L-tryptophan is an inhibitor of indoleamine 2,3-dioxygenase (IDO).


LM10 is a selective tryptophan 2,3-dioxygenase (TDO) inhibitor (IC50 values are 0.62 and 2 μM for human and mouse TDO, respectively).

Palmatine chloride

Palmatine chloride is an orally active and irreversible indoleamine 2,3-dioxygenase 1 (IDO-1) inhibitor.


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

Abmole Inhibitor Catalog 2017

Keywords: Indoximod, NLG-8189; D1MT; 1-methyl-D-tryptophan supplier, IDO, inhibitors

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