Date published: 2026-4-25

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α-Methyl-L-tryptophan (CAS 16709-25-4)

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Alternate Names:
(−)-α-Methyltryptophan
Application:
α-Methyl-L-tryptophan is A carrier molecule
CAS Number:
16709-25-4
Molecular Weight:
218.25
Molecular Formula:
C12H14N2O2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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α-Methyl-L-tryptophan is a compound that functions as a competitive inhibitor of the enzyme indoleamine 2,3-dioxygenase (IDO). It acts by binding to the active site of IDO, preventing the conversion of tryptophan to kynurenine. This inhibition of IDO activity leads to an accumulation of tryptophan and a decrease in the production of kynurenine and its downstream metabolites. In a research and development applications, α-Methyl-L-tryptophan may be used to study the role of IDO in immune regulation, inflammation, and cancer progression. By modulating the tryptophan-kynurenine pathway, α-Methyl-L-tryptophan allows the investigation of IDO inhibition on immune responses and disease pathogenesis at the molecular level. α-Methyl-L-tryptophan may be useful for understanding the molecular mechanisms underlying immune tolerance and disease progression in experimental models.


α-Methyl-L-tryptophan (CAS 16709-25-4) References

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  2. Does labeled alpha-methyl-L-tryptophan image ONLY blood-brain barrier transport of tryptophan?  |  Diksic, M. 2000. J Cereb Blood Flow Metab. 20: 1508-11. PMID: 11043914
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  8. The lumped constant of α-methyl-l-tryptophan is not influenced by drugs acting through serotonergic system.  |  Pivac, N. and Diksic, M. 2011. Neurochem Int. 58: 826-32. PMID: 21414366
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Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

α-Methyl-L-tryptophan, 10 mg

sc-208508
10 mg
$460.00

α-Methyl-L-tryptophan, 100 mg

sc-208508A
100 mg
$2800.00