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Catalog No. T4928Cas No. 2922-83-0
L-Kynurenine ((S)-Kynurenine) is a key intermediate in the breakdown pathway of tryptophan. L-Kynurenine is a substrate of kynureninase, KMO, and KAT associated with the suppression of antitumor immune responses. It has been shown to inhibit allogeneic T-cell proliferation and to increase malignant U87 glioma cell invasion into a collagen matrix.
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Pack SizePriceAvailabilityQuantity
50 mg$42In Stock
1 mL x 10 Mm (in DMSO)$46In Stock
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Product Introduction

L-Kynurenine ((S)-Kynurenine) is a key intermediate in the breakdown pathway of tryptophan. L-Kynurenine is a substrate of kynureninase, KMO, and KAT associated with the suppression of antitumor immune responses. It has been shown to inhibit allogeneic T-cell proliferation and to increase malignant U87 glioma cell invasion into a collagen matrix.
In vitro
Kynurenine and its further breakdown products carry out diverse biological functions, including dilating blood vessels during inflammation and regulating the immune response. Some cancers increase kynurenine production thereby increasing tumor growth. L-kynurenine (Kyn) is an aryl hydrocarbon receptor (AHR) agonist that activates AHR-directed, naive T cell polarization to the anti-inflammatory Treg phenotype. Kynurenine activates AHR signaling at physiological concentrations in H1L7.5c3 cells and acts as an AHR agonist after a 24-hr exposure by inducing the AHR-regulated luciferase gene in H1L7.5c3 mouse hepatocyte cells.
In vivo
Kynurenine expands rat and human arteries by activating Kv7 channels in the vascular smooth muscle, a process that leads to rat hypotension, partially reversible by inhibiting these channels. When L-kynurenine is given one hour before hypoxia-ischemia, it significantly prevents neurological damage in a dose-dependent manner, achieving full protection at 300 mg/kg. Additionally, this dosage inhibits the activation of c-fos in the cerebral cortex.
Chemical Properties
Molecular Weight208.21
Cas No.2922-83-0
Storage & Solubility Information
StoragePowder: -20°C for 3 years | In solvent: -80°C for 1 year
Solubility Information
DMSO: 50 mg/mL (240.14 mM)
0.5M HCL: 50mg/mL
H2O: 4mg/mL(at 20°C)
Solution Preparation Table
1 mM4.8028 mL24.0142 mL48.0284 mL240.1422 mL
5 mM0.9606 mL4.8028 mL9.6057 mL48.0284 mL
10 mM0.4803 mL2.4014 mL4.8028 mL24.0142 mL
20 mM0.2401 mL1.2007 mL2.4014 mL12.0071 mL
50 mM0.0961 mL0.4803 mL0.9606 mL4.8028 mL
100 mM0.0480 mL0.2401 mL0.4803 mL2.4014 mL


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