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Results for "

Tryptophan metabolites

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Tryptophan Hydroxylase (1) 5-HT Receptor (3) Amino Acid Derivatives (1) Apoptosis (16) Aryl Hydrocarbon Receptor (9) Bacterial (1) Calcium Channel (2) CXCR (5) Cytochrome P450 (3) Drug Metabolite (2) Endogenous Metabolite (52) Ferroptosis (2) GPR35 (5) iGluR (10) Interleukin Related (4) Isotope-Labeled Compounds (15) KMO (1) mGluR (2) MOFs (1) nAChR (2) NO Synthase (5) Nucleoside Antimetabolite/Analog (1) Reactive Oxygen Species (ROS) (5) Reference Standards (18) UGT (3)
By Research Areas:	Cancer (17) Cardiovascular Disease (6) Endocrinology (8) Inflammation/Immunology (15) Metabolic Disease (23) Neurological Disease (26)

By Targets:

Tryptophan Hydroxylase (1)

5-HT Receptor (3)

Amino Acid Derivatives (1)

Apoptosis (16)

Aryl Hydrocarbon Receptor (9)

Bacterial (1)

Calcium Channel (2)

CXCR (5)

Cytochrome P450 (3)

Drug Metabolite (2)

Endogenous Metabolite (52)

Ferroptosis (2)

GPR35 (5)

iGluR (10)

Interleukin Related (4)

Isotope-Labeled Compounds (15)

KMO (1)

mGluR (2)

MOFs (1)

nAChR (2)

NO Synthase (5)

Nucleoside Antimetabolite/Analog (1)

Reactive Oxygen Species (ROS) (5)

Reference Standards (18)

UGT (3)

By Research Areas:

Cancer (17)

Cardiovascular Disease (6)

Endocrinology (8)

Inflammation/Immunology (15)

Metabolic Disease (23)

Neurological Disease (26)

Inhibitors & Agonists

Peptides

Natural
Products

Isotope-Labeled Compounds

Targets Recommended: Tryptophan Hydroxylase

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-104026

L-Kynurenine Maximum Cited Publications 25 Publications Verification	Aryl Hydrocarbon Receptor Endogenous Metabolite	Cardiovascular Disease Neurological Disease Inflammation/Immunology Cancer
L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-N0122

5-Hydroxytryptophan 2 Publications Verification 5-HTP; DL-5-HydroxyTryptophan	Endogenous Metabolite 5-HT Receptor	Neurological Disease Metabolic Disease
5-Hydroxytryptophan, a tryptophan metabolite, is a direct 5-hydroxytryptamine (5-HT) precursor and an L-aromatic amino acid decarboxylase substrate. .

HY-100806

Kynurenic acid 5+ Cited Publications Quinurenic acid	iGluR Endogenous Metabolite Apoptosis CXCR GPR35	Neurological Disease Inflammation/Immunology Endocrinology
Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8.

HY-100807

Quinolinic acid 5+ Cited Publications	MOFs iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis	Neurological Disease Inflammation/Immunology
Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis .

HY-W013046

Phosphoribosyl pyrophosphate pentasodium PRPP pentasodium	Endogenous Metabolite	Others
Phosphoribosyl pyrophosphate (PRPP) pentasodium is an important metabolite required in the biosynthesis of purine and pyrimidine nucleotides, the amino acids histidine and tryptophan, and the cofactors NAD and NADP .

HY-113294

3-Hydroxykynurenine 2 Publications Verification 3-Hydroxy-DL-kynurenine	Endogenous Metabolite Apoptosis	Neurological Disease
3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W001171

3-Hydroxyanthranilic acid 1 Publications Verification	Endogenous Metabolite	Cardiovascular Disease Neurological Disease Metabolic Disease Inflammation/Immunology Endocrinology Cancer
3-Hydroxyanthranilic acid is a tryptophan metabolite in the kynurenine pathway.3-hydroxyanthranilic acid has anti-inflammatory, neuroprotective, and lipid-lowering effects. 3-hydroxyanthranilic acid can be used for researches of cardiovascular diseases, tumors, and metabolic diseases .

HY-W011910

Potassium 1H-indol-3-yl sulfate 1 Publications Verification	Endogenous Metabolite Aryl Hydrocarbon Receptor Cytochrome P450 UGT Interleukin Related	Metabolic Disease
Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases .

HY-W014502

D-Kynurenine	Aryl Hydrocarbon Receptor Endogenous Metabolite	Cancer
D-kynurenine, a metabolite of D-tryptophan, can serve as the bioprecursor of kynurenic acid (KYNA) and 3-hydroxykynurenine. D-Kynurenine is an agonist for G protein-coupled receptor, GPR109B. D-Kynurenine is a substrate in a fluorometric assay of D-amino acid oxidase. D-kynurenine promotes epithelial-to-mesenchymal transition via activating aryl hydrocarbon receptor (AHR) .

HY-104026R

L-Kynurenine (Standard) Maximum Cited Publications 25 Publications Verification	Reference Standards Aryl Hydrocarbon Receptor Endogenous Metabolite	Cardiovascular Disease Neurological Disease Inflammation/Immunology Cancer
L-Kynurenine (Standard) is the analytical standard of L-Kynurenine. This product is intended for research and analytical applications. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-100806S

Kynurenic acid-d5 1 Publications Verification Quinurenic acid-d₅	Isotope-Labeled Compounds iGluR Endogenous Metabolite Apoptosis CXCR GPR35	Neurological Disease Metabolic Disease Inflammation/Immunology
Kynurenic acid-d₅ is the deuterium labeled Kynurenic acid. Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8 .

HY-40161

Indole-3-carboxylic acid 2 Publications Verification	Endogenous Metabolite Bacterial	Metabolic Disease Cancer
Indole-3-carboxylic acid is an orally active urinary indolic tryptophan metabolite. Indole-3-carboxylic acid is a mediator of priming against *Plectosphaerella cucumerina*. Indole-3-carboxylic acid enhances the anti-colorectal cancer potency of Doxorubicin (HY-15142A) by inducing cell senescence. Indole-3-carboxylic acid can be used in liver disease research .

HY-107512

Kynurenic acid sodium 5+ Cited Publications	iGluR Apoptosis Endogenous Metabolite CXCR GPR35	Neurological Disease Inflammation/Immunology Endocrinology
Kynurenic acid sodium, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid sodium is also an agonist of GPR35/CXCR8.

HY-W011417

Cinnabarinic acid 1 Publications Verification	Endogenous Metabolite mGluR Apoptosis	Others
Cinnabarinic acid is a specific orthosteric agonist of mGlu₄ by interacting with residues of the glutamate binding pocket of mGlu4, has no activity at other mGlu receptors. Cinnabarinic acid is an endogenous metabolite of the kynurenine pathway of tryptophan. Cinnabarinic acid induces cell apoptosis .

HY-W015273A

trans-3-Indoleacrylic acid 1 Publications Verification	Endogenous Metabolite Ferroptosis	Metabolic Disease Cancer
Trans-3-Indoleacrylic acid is a tryptophan metabolite, which promotes tumor development through inhibition of RSL3 (HY-100218A) induced ferroptosis via AHR-ALDH1A3-FSP1-CoQ10 axis, and facilitates colorectal carcinogenesis

HY-100807S

Quinolinic acid-d3 2 Publications Verification	Isotope-Labeled Compounds iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis	Neurological Disease Inflammation/Immunology
Quinolinic acid-d₃ is the deuterium labeled Quinolinic acid. Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-W001160

5-Hydroxyindole	Endogenous Metabolite Calcium Channel nAChR	Neurological Disease Endocrinology Cancer
5-Hydroxyindole is an orally active hydroxylated indole and tryptophan metabolite. 5-Hydroxyindole activates α7 nicotinic acetylcholine receptors and acts on intestinal L-type calcium channels. 5-Hydroxyindole slows down the desensitization of 5-HT₃ receptor-mediated ion currents in cells. 5-Hydroxyindole causes convulsions and loss of consciousness. 5-Hydroxyindole is used in the study of neuroblastoma, schizophrenia, and diseases related to intestinal motility disorders .

HY-W019599

4-Chloro-L-phenylalanine L-PCPA	5-HT Receptor Tryptophan Hydroxylase	Neurological Disease
4-Chloro-L-phenylalanine (L-PCPA) is a tryptophan hydroxylase inhibitor targeting TPH1 and TPH2, with the activity of blocking serotonin biosynthesis. 4-Chloro-L-phenylalanine reduces the levels of serotonin and its metabolites in the brain without impairing the survival of serotonergic neurons. 4-Chloro-L-phenylalanine enhances anhedonic, depression-like and anxiety-like behaviors in mice with depleted noradrenergic and dopaminergic neurons. 4-Chloro-L-phenylalanine acts as a decarboxylation substrate for aromatic L-amino acid decarboxylase from Bacillus atrophaeus. 4-Chloro-L-phenylalanine can be used in studies related to Parkinson's disease .

HY-104026S

L-Kynurenine-d4 1 Publications Verification	Aryl Hydrocarbon Receptor Endogenous Metabolite	Cardiovascular Disease Neurological Disease Inflammation/Immunology Cancer
L-Kynurenine-d₄ is the deuterium labeled L-Kynurenine. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist[1][2].

HY-128731

5-Methoxy-DL-tryptophan 2 Publications Verification DL-5-MTP	Endogenous Metabolite Interleukin Related	Cardiovascular Disease
5-Methoxy-DL-tryptophan is a metabolite. 5-Methoxy-DL-tryptophan reduces LPS (HY-D1056)-induced release of IL-6. 5-Methoxy-DL-tryptophan has anti-inflammatory effects. 5-Methoxy-DL-tryptophan can be used in the study of atherosclerosis .

HY-112179

GSK180 2 Publications Verification	KMO	Inflammation/Immunology
GSK180 is a selective, competitive, and potent inhibitor of kynurenine-3-monooxygenase (KMO), a key enzyme of tryptophan metabolism (IC₅₀, ~6 nM), but shows negligible activity against other enzymes on the tryptophan pathway. GSK180 rapidly changes levels of kynurenine pathway metabolites, and acts as a useful tool to probe the therapeutic potential of KMO inhibition .

HY-100806R

Kynurenic acid (Standard) 5+ Cited Publications Quinurenic acid (Standard)	Reference Standards iGluR Endogenous Metabolite Apoptosis CXCR GPR35	Neurological Disease Inflammation/Immunology Endocrinology
Kynurenic acid (Standard) is the analytical standard of Kynurenic acid. This product is intended for research and analytical applications. Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8.

HY-100807R

Quinolinic acid (Standard) 5+ Cited Publications	Reference Standards iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis	Neurological Disease Inflammation/Immunology
Quinolinic acid (Standard) is the analytical standard of Quinolinic acid. This product is intended for research and analytical applications. Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-W012480

DL-Tryptophan (±)-Tryptophan	Endogenous Metabolite	Metabolic Disease
DL-Tryptophan is an endogenous metabolite.

HY-W011417R

Cinnabarinic acid (Standard)	Endogenous Metabolite Reference Standards mGluR Apoptosis	Others
Cinnabarinic acid (Standard) is the analytical standard of Cinnabarinic acid. This product is intended for research and analytical applications. Cinnabarinic acid is a specific orthosteric agonist of mGlu₄ by interacting with residues of the glutamate binding pocket of mGlu4, has no activity at other mGlu receptors. Cinnabarinic acid is an endogenous metabolite of the kynurenine pathway of tryptophan. Cinnabarinic acid induces cell apoptosis .

HY-W014504

DL-Kynurenine	Endogenous Metabolite	Metabolic Disease
DL-Kynurenine is a key metabolite in the tryptophan metabolic pathway and can cross the blood-brain barrier. DL-Kynurenine has a bidirectional regulatory effect on neural excitability. DL-Kynurenine can enhance the convulsive and lethal effects caused by strychnine. DL-Kynurenine is the precursor of Kynurenic acid (HY-100806), which is an antagonist at the glycine site of NMDA receptors and can counteract excitatory toxins. DL-Kynurenine can be used for research on neurotoxicity .

HY-132429S

Potassium 1H-indol-3-yl sulfate-d5	Isotope-Labeled Compounds	Others
Potassium 1H-indol-3-yl sulfate-d₅ is the deuterium labeled 3-Indoxyl Sulfate potassium. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.

HY-W001171R

3-Hydroxyanthranilic acid (Standard) 1 Publications Verification	Reference Standards Endogenous Metabolite	Others
3-Hydroxyanthranilic acid (Standard) is the analytical standard of 3-Hydroxyanthranilic acid. This product is intended for research and analytical applications. 3-Hydroxyanthranilic acid is a tryptophan metabolite in the kynurenine pathway.

HY-136591

Demoxepam	Drug Metabolite	Neurological Disease Cancer
Demoxepam is a major metabolite of Chlordiazepoxide. Demoxepam exhibits cytotoxicity activity against cancer cell lines. Demoxepam has anticonvulsant and anxiolytic effects. Demoxepam has an inhibitory effect on in vitro [ ³H]tryptophan binding to rat hepatic nuclei .

HY-100807S2

Quinolinic acid-13C4,15N	Isotope-Labeled Compounds iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis	Neurological Disease Inflammation/Immunology
Quinolinic acid-13C4, 15N is an isotopic labeled Quinolinic acid (HY-100807). Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-W011910S

Potassium 1H-indol-3-yl sulfate-d4	Isotope-Labeled Compounds Endogenous Metabolite Aryl Hydrocarbon Receptor Cytochrome P450 UGT Interleukin Related	Metabolic Disease
Potassium 1H-indol-3-yl sulfate-d₄ potassium is the deuterium labeled Potassium 1H-indol-3-yl sulfate. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.

HY-104026S1

L-Kynurenine-d4-1	Aryl Hydrocarbon Receptor Endogenous Metabolite	Cardiovascular Disease Neurological Disease Inflammation/Immunology Cancer
L-Kynurenine-d₄-1 is deuterium labeled L-Kynurenine. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-113294R

3-Hydroxykynurenine (Standard) 3-Hydroxy-DL-kynurenine (Standard)	Reference Standards Endogenous Metabolite Apoptosis	Neurological Disease
3-Hydroxykynurenine (Standard) is the analytical standard of 3-Hydroxykynurenine. This product is intended for research and analytical applications. 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-113294S2

3-Hydroxykynurenine-13C2,15N hydrochloride 3-Hydroxy-DL-kynurenine-13C2,15N hydrochloride	Isotope-Labeled Compounds Endogenous Metabolite Apoptosis	Neurological Disease
3-Hydroxykynurenine- ¹³C₂, ¹⁵N (3-Hydroxy-DL-kynurenine- ¹³C₂, ¹⁵N) hydrochloride is the ¹³C and ¹⁵N labeled 3-Hydroxykynurenine hydrochloride (HY-113294) . 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W012480S

DL-Tryptophan-d3 (±)-Tryptophan-d₃	Isotope-Labeled Compounds Endogenous Metabolite	Metabolic Disease
DL-Tryptophan-d₃ is the deuterium labeled DL-Tryptophan. DL-Tryptophan is an endogenous metabolite.

HY-W011607

L-Alanyl-L-tryptophan	Amino Acid Derivatives	Others
L-Alanyl-L-tryptophan is a dipeptide formed from L-alanyl and L-tryptophan, and is also a metabolite. L-Alanyl-L-tryptophan can be adsorbated on the surface of gold nanoparticles, and the Raman signal can be enhanced by SERS technology to obtain the enhanced Raman spectroscopy .

HY-104026S2

L-Kynurenine-d4-1 hydrochloride	Isotope-Labeled Compounds	Cancer
L-Kynurenine-d₄-1 hydrochloride is the deuterium labeled L-Kynurenine (HY-104026). L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist .

HY-40161R

Indole-3-carboxylic acid (Standard)	Reference Standards Endogenous Metabolite	Metabolic Disease
Indole-3-carboxylic acid (Standard) is the analytical standard of Indole-3-carboxylic acid. This product is intended for research and analytical applications. Indole-3-carboxylic acid is a normal urinary indolic tryptophan metabolite and has been found elevated in patients with liver diseases .

HY-40161S

Indole-3-carboxylic acid-d4	Isotope-Labeled Compounds Endogenous Metabolite	Metabolic Disease
Indole-3-carboxylic acid-d₄ is deuterium labeled Indole-3-carboxylic acid. Indole-3-carboxylic acid is a normal urinary indolic tryptophan metabolite and has been found elevated in patients with liver diseases .

HY-109690

1-(2-Amino-3-hydroxyphenyl)ethanone	Endogenous Metabolite	Cancer
1-(2-Amino-3-hydroxyphenyl)ethanone is the kynuridine metabolite, which could be extracted from rat liver mitochondrium. 1-(2-Amino-3-hydroxyphenyl)ethanone is associated with tryptophan metabolism disturbances, and can be used in bladder cancer, leukemia and anemia researches .

HY-100807S1

Quinolinic acid-13C7	Isotope-Labeled Compounds iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis	Neurological Disease
Quinolinic acid- ¹³C₇ is the ¹³C labeled Quinolinic acid (HY-100807). Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-113294S

3-Hydroxykynurenine-13C3,15N 3-Hydroxy-DL-kynurenine-¹³C₃,¹⁵N	Isotope-Labeled Compounds Apoptosis Endogenous Metabolite	Neurological Disease
3-Hydroxykynurenine- ¹³C₃, ¹⁵N (3-Hydroxy-DL-kynurenine- ¹³C₃, ¹⁵N) is the ¹³C and ¹⁵N labeled 3-Hydroxykynurenine (HY-113294) . 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W015273AR

trans-3-Indoleacrylic acid (Standard)	Reference Standards Endogenous Metabolite Ferroptosis	Metabolic Disease Cancer
trans-3-Indoleacrylic acid (Standard) is the analytical standard of trans-3-Indoleacrylic acid. This product is intended for research and analytical applications. Trans-3-Indoleacrylic acid is a tryptophan metabolite, which promotes tumor development through inhibition of RSL3 (HY-100218A) induced ferroptosis via AHR-ALDH1A3-FSP1-CoQ10 axis, and facilitates colorectal carcinogenesis[1]

HY-W008820R

Glutaric acid (Standard)	Reference Standards Endogenous Metabolite	Metabolic Disease
Glutaric acid (Standard) is the analytical standard of Glutaric acid. This product is intended for research and analytical applications. Glutaric acid, C5 dicarboxylic acid, is an intermediate during the catabolic pathways of lysine and tryptophan. Glutaric acid affects pericyte contractility and migration. Glutaric acid is an indicator of glutaric aciduria type I . In Vitro: Glutaric acid (GA) at concentrations of 1 and 2 mM is able to reduce TRAP measurement by up to 28% in a dose-dependent manner (β=0.77; P<0.001). Furthermore, a significantly inverse correlation is also verified between chemiluminescence and TRAP (β=0.81; P<0.001). Glutaric acid does not alter the activities of Cat and SOD, but strongly inhibits (up to 46%) the activity of GPx even at the lower concentration used (0.5 mM). It is observed that the metabolite inhibits this activity in a dose-dependent manner at concentrations as low as 0.05 mM .

HY-141465

3-Hydroxybutyryl-CoA	Endogenous Metabolite	Metabolic Disease
3-Hydroxybutyryl-CoA is a metabolite which can be found in mouse or E.coli, et al. 3-Hydroxybutyryl-CoA has a 3-hydroxybutanoyl as the S-acyl component, and is an intermediate in the fermentation of butyric acid, and in the metabolism of lysine and tryptophan .

HY-W714890

DL-Tryptophan-d5 (±)-Tryptophan-d₅	Isotope-Labeled Compounds Endogenous Metabolite	Metabolic Disease
DL-Tryptophan-d₅ ((±)-Tryptophan-d₅) is the deuterium labeled DL-Tryptophan (HY-W012480). DL-Tryptophan is an endogenous metabolite.

HY-W077257

5-Bromo-DL-tryptophan	Endogenous Metabolite	Others
5-Bromo-DL-tryptophan is a natural product which can be obtained from Aspergillus fumigatus .

HY-104026S3

L-Kynurenine-13C4,15N-1	Isotope-Labeled Compounds	Cancer
L-Kynurenine- ¹³C₄, ¹⁵N-1 is the ¹³C and ¹⁵N labled L-Kynurenine (HY-104026) . L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-N0122R

5-Hydroxytryptophan (Standard) 5-HTP (Standard); DL-5-HydroxyTryptophan (Standard)	Endogenous Metabolite 5-HT Receptor Reference Standards	Neurological Disease Metabolic Disease
5-Hydroxytryptophan (Standard) is the analytical standard of 5-Hydroxytryptophan. This product is intended for research and analytical applications. 5-Hydroxytryptophan, a tryptophan metabolite, is a direct 5-hydroxytryptamine (5-HT) precursor and an L-aromatic amino acid decarboxylase substrate. .

HY-W014502R

D-Kynurenine (Standard)	Reference Standards Aryl Hydrocarbon Receptor Endogenous Metabolite	Cancer
D-Kynurenine (Standard) is the analytical standard of D-Kynurenine. This product is intended for research and analytical applications. D-kynurenine, a metabolite of D-tryptophan, can serve as the bioprecursor of kynurenic acid (KYNA) and 3-hydroxykynurenine. D-Kynurenine is an agonist for G protein-coupled receptor, GPR109B. D-Kynurenine is a substrate in a fluorometric assay of D-amino acid oxidase. D-kynurenine promotes epithelial-to-mesenchymal transition via activating aryl hydrocarbon receptor (AHR) .

Cat. No.	Product Name	Target	Research Area

HY-W019599

4-Chloro-L-phenylalanine L-PCPA	5-HT Receptor Tryptophan Hydroxylase	Neurological Disease
4-Chloro-L-phenylalanine (L-PCPA) is a tryptophan hydroxylase inhibitor targeting TPH1 and TPH2, with the activity of blocking serotonin biosynthesis. 4-Chloro-L-phenylalanine reduces the levels of serotonin and its metabolites in the brain without impairing the survival of serotonergic neurons. 4-Chloro-L-phenylalanine enhances anhedonic, depression-like and anxiety-like behaviors in mice with depleted noradrenergic and dopaminergic neurons. 4-Chloro-L-phenylalanine acts as a decarboxylation substrate for aromatic L-amino acid decarboxylase from Bacillus atrophaeus. 4-Chloro-L-phenylalanine can be used in studies related to Parkinson's disease .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-104026

L-Kynurenine Maximum Cited Publications 25 Publications Verification	Cardiovascular Disease Structural Classification Human Gut Microbiota Metabolites Neurological Disease Classification of Application Fields Ketones, Aldehydes, Acids Endogenous metabolite Inflammation/Immunology Disease Research Fields	Aryl Hydrocarbon Receptor Endogenous Metabolite
L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-N0122

5-Hydroxytryptophan 2 Publications Verification 5-HTP; DL-5-HydroxyTryptophan	Monophenols Classification of Application Fields Disease markers Phenols Endocrine diseases Metabolic Disease Amino acids Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite 5-HT Receptor
5-Hydroxytryptophan, a tryptophan metabolite, is a direct 5-hydroxytryptamine (5-HT) precursor and an L-aromatic amino acid decarboxylase substrate. .

HY-100806

Kynurenic acid 5+ Cited Publications Quinurenic acid	Alkaloids Structural Classification Human Gut Microbiota Metabolites Neurological Disease Classification of Application Fields Quinoline Alkaloids Endogenous metabolite Disease Research Fields Endocrinology	iGluR Endogenous Metabolite Apoptosis CXCR GPR35
Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8.

HY-100807

Quinolinic acid 5+ Cited Publications	Alkaloids Structural Classification Microorganisms Disease markers Pyridine Alkaloids Nervous System Disorder Endogenous metabolite	MOFs iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis
Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis .

HY-W013046

Phosphoribosyl pyrophosphate pentasodium PRPP pentasodium	Natural Products Classification of Application Fields Other Diseases Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
Phosphoribosyl pyrophosphate (PRPP) pentasodium is an important metabolite required in the biosynthesis of purine and pyrimidine nucleotides, the amino acids histidine and tryptophan, and the cofactors NAD and NADP .

HY-113294

3-Hydroxykynurenine 2 Publications Verification 3-Hydroxy-DL-kynurenine	Structural Classification Monophenols Neurological Disease Classification of Application Fields Ketones, Aldehydes, Acids Phenols Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite Apoptosis
3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W001171

3-Hydroxyanthranilic acid 1 Publications Verification	Human Gut Microbiota Metabolites Monophenols Microorganisms Classification of Application Fields Ketones, Aldehydes, Acids Other Diseases Phenols Endogenous metabolite Disease Research Fields	Endogenous Metabolite
3-Hydroxyanthranilic acid is a tryptophan metabolite in the kynurenine pathway.3-hydroxyanthranilic acid has anti-inflammatory, neuroprotective, and lipid-lowering effects. 3-hydroxyanthranilic acid can be used for researches of cardiovascular diseases, tumors, and metabolic diseases .

HY-W011910

Potassium 1H-indol-3-yl sulfate 1 Publications Verification	Structural Classification Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite Aryl Hydrocarbon Receptor Cytochrome P450 UGT Interleukin Related
Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases .

HY-W014502

D-Kynurenine	Classification of Application Fields Ketones, Aldehydes, Acids Endogenous metabolite Disease Research Fields Cancer	Aryl Hydrocarbon Receptor Endogenous Metabolite
D-kynurenine, a metabolite of D-tryptophan, can serve as the bioprecursor of kynurenic acid (KYNA) and 3-hydroxykynurenine. D-Kynurenine is an agonist for G protein-coupled receptor, GPR109B. D-Kynurenine is a substrate in a fluorometric assay of D-amino acid oxidase. D-kynurenine promotes epithelial-to-mesenchymal transition via activating aryl hydrocarbon receptor (AHR) .

HY-104026R

L-Kynurenine (Standard) Maximum Cited Publications 25 Publications Verification	Structural Classification Alkaloids Human Gut Microbiota Metabolites Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Aryl Hydrocarbon Receptor Endogenous Metabolite
L-Kynurenine (Standard) is the analytical standard of L-Kynurenine. This product is intended for research and analytical applications. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-40161

Indole-3-carboxylic acid 2 Publications Verification	Alkaloids Human Gut Microbiota Metabolites Classification of Application Fields Metabolic Disease Endogenous metabolite Disease Research Fields Indole Alkaloids Source Classification	Endogenous Metabolite Bacterial
Indole-3-carboxylic acid is an orally active urinary indolic tryptophan metabolite. Indole-3-carboxylic acid is a mediator of priming against *Plectosphaerella cucumerina*. Indole-3-carboxylic acid enhances the anti-colorectal cancer potency of Doxorubicin (HY-15142A) by inducing cell senescence. Indole-3-carboxylic acid can be used in liver disease research .

HY-107512

Kynurenic acid sodium 5+ Cited Publications	Alkaloids Classification of Application Fields Quinoline Alkaloids Endogenous metabolite Inflammation/Immunology Disease Research Fields Source Classification	iGluR Apoptosis Endogenous Metabolite CXCR GPR35
Kynurenic acid sodium, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid sodium is also an agonist of GPR35/CXCR8.

HY-W015273A

trans-3-Indoleacrylic acid 1 Publications Verification	Structural Classification Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite Ferroptosis
Trans-3-Indoleacrylic acid is a tryptophan metabolite, which promotes tumor development through inhibition of RSL3 (HY-100218A) induced ferroptosis via AHR-ALDH1A3-FSP1-CoQ10 axis, and facilitates colorectal carcinogenesis

HY-W001160

5-Hydroxyindole	Alkaloids Monophenols Classification of Application Fields Other Diseases Phenols Endogenous metabolite Disease Research Fields Indole Alkaloids Source Classification	Endogenous Metabolite Calcium Channel nAChR
5-Hydroxyindole is an orally active hydroxylated indole and tryptophan metabolite. 5-Hydroxyindole activates α7 nicotinic acetylcholine receptors and acts on intestinal L-type calcium channels. 5-Hydroxyindole slows down the desensitization of 5-HT₃ receptor-mediated ion currents in cells. 5-Hydroxyindole causes convulsions and loss of consciousness. 5-Hydroxyindole is used in the study of neuroblastoma, schizophrenia, and diseases related to intestinal motility disorders .

HY-128731

5-Methoxy-DL-tryptophan 2 Publications Verification DL-5-MTP	Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite Interleukin Related
5-Methoxy-DL-tryptophan is a metabolite. 5-Methoxy-DL-tryptophan reduces LPS (HY-D1056)-induced release of IL-6. 5-Methoxy-DL-tryptophan has anti-inflammatory effects. 5-Methoxy-DL-tryptophan can be used in the study of atherosclerosis .

HY-100806R

Kynurenic acid (Standard) 5+ Cited Publications Quinurenic acid (Standard)	Structural Classification Alkaloids Human Gut Microbiota Metabolites Microorganisms Ketones, Aldehydes, Acids Quinoline Alkaloids Endogenous metabolite Source Classification	Reference Standards iGluR Endogenous Metabolite Apoptosis CXCR GPR35
Kynurenic acid (Standard) is the analytical standard of Kynurenic acid. This product is intended for research and analytical applications. Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8.

HY-100807R

Quinolinic acid (Standard) 5+ Cited Publications	Structural Classification Alkaloids Microorganisms Ketones, Aldehydes, Acids Disease markers Pyridine Alkaloids Nervous System Disorder Endogenous metabolite Source Classification	Reference Standards iGluR Endogenous Metabolite Reactive Oxygen Species (ROS) NO Synthase Apoptosis
Quinolinic acid (Standard) is the analytical standard of Quinolinic acid. This product is intended for research and analytical applications. Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-W012480

DL-Tryptophan (±)-Tryptophan	Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
DL-Tryptophan is an endogenous metabolite.

HY-W014504

DL-Kynurenine	Structural Classification Human Gut Microbiota Metabolites Classification of Application Fields Ketones, Aldehydes, Acids Metabolic Disease Endogenous metabolite Disease Research Fields Source Classification	Endogenous Metabolite
DL-Kynurenine is a key metabolite in the tryptophan metabolic pathway and can cross the blood-brain barrier. DL-Kynurenine has a bidirectional regulatory effect on neural excitability. DL-Kynurenine can enhance the convulsive and lethal effects caused by strychnine. DL-Kynurenine is the precursor of Kynurenic acid (HY-100806), which is an antagonist at the glycine site of NMDA receptors and can counteract excitatory toxins. DL-Kynurenine can be used for research on neurotoxicity .

HY-W001171R

3-Hydroxyanthranilic acid (Standard) 1 Publications Verification	Structural Classification Human Gut Microbiota Metabolites Monophenols Microorganisms Ketones, Aldehydes, Acids Phenols Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
3-Hydroxyanthranilic acid (Standard) is the analytical standard of 3-Hydroxyanthranilic acid. This product is intended for research and analytical applications. 3-Hydroxyanthranilic acid is a tryptophan metabolite in the kynurenine pathway.

HY-113294R

3-Hydroxykynurenine (Standard) 3-Hydroxy-DL-kynurenine (Standard)	Structural Classification Monophenols Ketones, Aldehydes, Acids Phenols Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite Apoptosis
3-Hydroxykynurenine (Standard) is the analytical standard of 3-Hydroxykynurenine. This product is intended for research and analytical applications. 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-40161R

Indole-3-carboxylic acid (Standard)	Alkaloids Structural Classification Human Gut Microbiota Metabolites Endogenous metabolite Indole Alkaloids Source Classification	Reference Standards Endogenous Metabolite
Indole-3-carboxylic acid (Standard) is the analytical standard of Indole-3-carboxylic acid. This product is intended for research and analytical applications. Indole-3-carboxylic acid is a normal urinary indolic tryptophan metabolite and has been found elevated in patients with liver diseases .

HY-W015273AR

trans-3-Indoleacrylic acid (Standard)	Structural Classification Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite Ferroptosis
trans-3-Indoleacrylic acid (Standard) is the analytical standard of trans-3-Indoleacrylic acid. This product is intended for research and analytical applications. Trans-3-Indoleacrylic acid is a tryptophan metabolite, which promotes tumor development through inhibition of RSL3 (HY-100218A) induced ferroptosis via AHR-ALDH1A3-FSP1-CoQ10 axis, and facilitates colorectal carcinogenesis[1]

HY-W008820R

Glutaric acid (Standard)	Structural Classification Microorganisms Ketones, Aldehydes, Acids Disease markers Endocrine diseases Nervous System Disorder Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
Glutaric acid (Standard) is the analytical standard of Glutaric acid. This product is intended for research and analytical applications. Glutaric acid, C5 dicarboxylic acid, is an intermediate during the catabolic pathways of lysine and tryptophan. Glutaric acid affects pericyte contractility and migration. Glutaric acid is an indicator of glutaric aciduria type I . In Vitro: Glutaric acid (GA) at concentrations of 1 and 2 mM is able to reduce TRAP measurement by up to 28% in a dose-dependent manner (β=0.77; P<0.001). Furthermore, a significantly inverse correlation is also verified between chemiluminescence and TRAP (β=0.81; P<0.001). Glutaric acid does not alter the activities of Cat and SOD, but strongly inhibits (up to 46%) the activity of GPx even at the lower concentration used (0.5 mM). It is observed that the metabolite inhibits this activity in a dose-dependent manner at concentrations as low as 0.05 mM .

HY-141465

3-Hydroxybutyryl-CoA	Human Gut Microbiota Metabolites Microorganisms Endogenous metabolite Source Classification	Endogenous Metabolite
3-Hydroxybutyryl-CoA is a metabolite which can be found in mouse or E.coli, et al. 3-Hydroxybutyryl-CoA has a 3-hydroxybutanoyl as the S-acyl component, and is an intermediate in the fermentation of butyric acid, and in the metabolism of lysine and tryptophan .

HY-W077257

5-Bromo-DL-tryptophan	Alkaloids Animals Indole Alkaloids Source Classification	Endogenous Metabolite
5-Bromo-DL-tryptophan is a natural product which can be obtained from Aspergillus fumigatus .

HY-N0122R

5-Hydroxytryptophan (Standard) 5-HTP (Standard); DL-5-HydroxyTryptophan (Standard)	Structural Classification Monophenols Disease markers Phenols Endocrine diseases Amino acids Endogenous metabolite Source Classification	Endogenous Metabolite 5-HT Receptor Reference Standards
5-Hydroxytryptophan (Standard) is the analytical standard of 5-Hydroxytryptophan. This product is intended for research and analytical applications. 5-Hydroxytryptophan, a tryptophan metabolite, is a direct 5-hydroxytryptamine (5-HT) precursor and an L-aromatic amino acid decarboxylase substrate. .

HY-W014502R

D-Kynurenine (Standard)	Ketones, Aldehydes, Acids Endogenous metabolite	Reference Standards Aryl Hydrocarbon Receptor Endogenous Metabolite
D-Kynurenine (Standard) is the analytical standard of D-Kynurenine. This product is intended for research and analytical applications. D-kynurenine, a metabolite of D-tryptophan, can serve as the bioprecursor of kynurenic acid (KYNA) and 3-hydroxykynurenine. D-Kynurenine is an agonist for G protein-coupled receptor, GPR109B. D-Kynurenine is a substrate in a fluorometric assay of D-amino acid oxidase. D-kynurenine promotes epithelial-to-mesenchymal transition via activating aryl hydrocarbon receptor (AHR) .

HY-N10270

Verrucofortine	Alkaloids Microorganisms Classification of Application Fields Other Diseases Disease Research Fields Indole Alkaloids Source Classification	Endogenous Metabolite
Verrucofortine, a fungal metabolite, is an alkaloid derived from tryptophan and leucine .

HY-W011978R

N-Acetyl-L-tryptophan (Standard)	Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
N-Acetyl-L-tryptophan (Standard) is the analytical standard of N-Acetyl-L-tryptophan. This product is intended for research and analytical applications. N-Acetyl-L-tryptophan is an endogenous metabolite.

HY-W012480R

DL-Tryptophan (Standard) (±)-Tryptophan (Standard)	Structural Classification Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
DL-Tryptophan is an endogenous metabolite.

HY-107512R

Kynurenic acid sodium (Standard)	Structural Classification Alkaloids Quinoline Alkaloids Endogenous metabolite Source Classification	iGluR Apoptosis Endogenous Metabolite CXCR GPR35 Reference Standards
Kynurenic acid (sodium) (Standard) is the analytical standard of Kynurenic acid (sodium). This product is intended for research and analytical applications. Kynurenic acid sodium, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid sodium is also an agonist of GPR35/CXCR8.

HY-W014504R

DL-Kynurenine (Standard)	Structural Classification Human Gut Microbiota Metabolites Microorganisms Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Reference Standards Endogenous Metabolite
DL-Kynurenine (Standard) is the analytical standard of DL-Kynurenine. This product is intended for research and analytical applications. DL-Kynurenine is a key metabolite in the tryptophan metabolic pathway and can cross the blood-brain barrier. DL-Kynurenine has a bidirectional regulatory effect on neural excitability. DL-Kynurenine can enhance the convulsive and lethal effects caused by strychnine. DL-Kynurenine is the precursor of Kynurenic acid (HY-100806), which is an antagonist at the glycine site of NMDA receptors and can counteract excitatory toxins. DL-Kynurenine can be used for research on neurotoxicity.

HY-W001160R

5-Hydroxyindole (Standard)	Alkaloids Structural Classification Monophenols Phenols Endogenous metabolite Indole Alkaloids Source Classification	Reference Standards Endogenous Metabolite nAChR Calcium Channel
5-Hydroxyindole (Standard) is the analytical standard of 5-Hydroxyindole (HY-W001160). This product is intended for research and analytical applications. 5-Hydroxyindole is an orally active hydroxylated indole and tryptophan metabolite. 5-Hydroxyindole activates α7 nicotinic acetylcholine receptors and acts on intestinal L-type calcium channels. 5-Hydroxyindole slows down the desensitization of 5-HT₃ receptor-mediated ion currents in cells. 5-Hydroxyindole causes convulsions and loss of consciousness. 5-Hydroxyindole is used in the study of neuroblastoma, schizophrenia, and diseases related to intestinal motility disorders .

HY-160936

5-Hydroxyindoleacetaldehyde	Structural Classification Natural Products Endogenous metabolite Source Classification	Nucleoside Antimetabolite/Analog
5-hydroxyindolacetaldehyde (5-HIAAld), an oxidation product of serotonin, is a tryptophan metabolite. 5-hydroxyindolacetaldehyde is formed from serotonin by monoamine oxidase A (MAO-A),

HY-W011910R

Potassium 1H-indol-3-yl sulfate (Standard)	Structural Classification Ketones, Aldehydes, Acids Endogenous metabolite Source Classification	Endogenous Metabolite Reference Standards Aryl Hydrocarbon Receptor Cytochrome P450 UGT Interleukin Related
Potassium 1H-indol-3-yl sulfate (Standard) is the analytical standard of Potassium 1H-indol-3-yl sulfate (HY-W011910). This product is intended for research and analytical applications. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.

Cat. No.	Product Name	Chemical Structure

HY-100806S

Kynurenic acid-d5 1 Publications Verification
Kynurenic acid-d₅ is the deuterium labeled Kynurenic acid. Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also an agonist of GPR35/CXCR8 .

HY-100807S

Quinolinic acid-d3 2 Publications Verification
Quinolinic acid-d₃ is the deuterium labeled Quinolinic acid. Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-104026S

L-Kynurenine-d4 1 Publications Verification
L-Kynurenine-d₄ is the deuterium labeled L-Kynurenine. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist[1][2].

HY-132429S

Potassium 1H-indol-3-yl sulfate-d5

Potassium 1H-indol-3-yl sulfate-d₅ is the deuterium labeled 3-Indoxyl Sulfate potassium. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.

HY-100807S2

Quinolinic acid-13C4,15N
Quinolinic acid-13C4, 15N is an isotopic labeled Quinolinic acid (HY-100807). Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-W011910S

Potassium 1H-indol-3-yl sulfate-d4

Potassium 1H-indol-3-yl sulfate-d₄ potassium is the deuterium labeled Potassium 1H-indol-3-yl sulfate. Potassium 1H-indol-3-yl sulfate is a metabolite of tryptophan, produced by intestinal microorganisms and combined with sulfate in the liver before entering the circulatory system. Potassium 1H-indol-3-yl sulfate is a potent endogenous agonist of the aryl hydrocarbon receptor (AhR) and a urinary toxin. Potassium 1H-indol-3-yl sulfate can be used for research on kidney diseases.

HY-104026S1

L-Kynurenine-d4-1
L-Kynurenine-d₄-1 is deuterium labeled L-Kynurenine. L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-113294S2

3-Hydroxykynurenine-13C2,15N hydrochloride

3-Hydroxykynurenine- ¹³C₂, ¹⁵N (3-Hydroxy-DL-kynurenine- ¹³C₂, ¹⁵N) hydrochloride is the ¹³C and ¹⁵N labeled 3-Hydroxykynurenine hydrochloride (HY-113294) . 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W012480S

DL-Tryptophan-d3
DL-Tryptophan-d₃ is the deuterium labeled DL-Tryptophan. DL-Tryptophan is an endogenous metabolite.

HY-104026S2

L-Kynurenine-d4-1 hydrochloride
L-Kynurenine-d₄-1 hydrochloride is the deuterium labeled L-Kynurenine (HY-104026). L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist .

HY-40161S

Indole-3-carboxylic acid-d4
Indole-3-carboxylic acid-d₄ is deuterium labeled Indole-3-carboxylic acid. Indole-3-carboxylic acid is a normal urinary indolic tryptophan metabolite and has been found elevated in patients with liver diseases .

HY-100807S1

Quinolinic acid-13C7
Quinolinic acid- ¹³C₇ is the ¹³C labeled Quinolinic acid (HY-100807). Quinolinic acid, an endogenous metabolite of tryptophan, is a N-methyl-D-aspartate receptor (NMDA receptor) agonist. Quinolinic acid increases glutamate efflux, induces the generation of ROS, activates nitric oxide synthase, produces excessive NO, leading to calcium ion influx and neuronal apoptosis.

HY-113294S

3-Hydroxykynurenine-13C3,15N
3-Hydroxykynurenine- ¹³C₃, ¹⁵N (3-Hydroxy-DL-kynurenine- ¹³C₃, ¹⁵N) is the ¹³C and ¹⁵N labeled 3-Hydroxykynurenine (HY-113294) . 3-Hydroxykynurenine, a metabolite of tryptophan, is a potential endogenous neurotoxin whose increased levels have been described in several neurodegenerative disorders. 3-Hydroxykynurenine induces neuronal apoptosis .

HY-W714890

DL-Tryptophan-d5
DL-Tryptophan-d₅ ((±)-Tryptophan-d₅) is the deuterium labeled DL-Tryptophan (HY-W012480). DL-Tryptophan is an endogenous metabolite.

HY-104026S3

L-Kynurenine-13C4,15N-1
L-Kynurenine- ¹³C₄, ¹⁵N-1 is the ¹³C and ¹⁵N labled L-Kynurenine (HY-104026) . L-Kynurenine is a metabolite of the amino acid L-tryptophan. L-Kynurenine is an aryl hydrocarbon receptor agonist.

HY-W012480S1

DL-Tryptophan-d8
DL-Tryptophan-d₈ is the deuterium labeled DL-Tryptophan. DL-Tryptophan is an endogenous metabolite.

HY-W014504S1

DL-Kynurenine-d7

DL-Kynurenine-d₇ is the deuterium labeled DL-Kynurenine. DL-Kynurenine is a key metabolite in the tryptophan metabolic pathway and can cross the blood-brain barrier. DL-Kynurenine has a bidirectional regulatory effect on neural excitability. DL-Kynurenine can enhance the convulsive and lethal effects caused by strychnine. DL-Kynurenine is the precursor of Kynurenic acid (HY-100806), which is an antagonist at the glycine site of NMDA receptors and can counteract excitatory toxins. DL-Kynurenine can be used for research on neurotoxicity.

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