d 2 indole 3 propionic acid Search Results


indole-3-propionic acid  (Enamine Ltd)
99
Enamine Ltd indole-3-propionic acid
Indole 3 Propionic Acid, supplied by Enamine Ltd, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/custom%40en300-20789%4010%2E1101%2F2025%2E10%2E19%2E683261?v=Enamine+Ltd
Average 99 stars, based on 1 article reviews
indole-3-propionic acid - by Bioz Stars, 2026-07
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indole 3 propionic acid  (Chem Impex International)
95
Chem Impex International indole 3 propionic acid
Indole 3 Propionic Acid, supplied by Chem Impex International, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pmc04651089-51-5-7?v=Chem+Impex+International
Average 95 stars, based on 1 article reviews
indole 3 propionic acid - by Bioz Stars, 2026-07
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indole 3 propionic acid ipa  (Shanghai Aladdin Bio-Chem)
86
Shanghai Aladdin Bio-Chem indole 3 propionic acid ipa
Indole 3 Propionic Acid Ipa, supplied by Shanghai Aladdin Bio-Chem, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pm32659084__jf0c02636_si_001-30-0-16?v=Shanghai+Aladdin+Bio-Chem
Average 86 stars, based on 1 article reviews
indole 3 propionic acid ipa - by Bioz Stars, 2026-07
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tryptophan derivatives  (Postbiotics Inc)
86
Postbiotics Inc tryptophan derivatives
Tryptophan Derivatives, supplied by Postbiotics Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pm42259432-374-11-0?v=Postbiotics+Inc
Average 86 stars, based on 1 article reviews
tryptophan derivatives - by Bioz Stars, 2026-07
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candidate postbiotics include indole 3 propionate  (Postbiotics Inc)
86
Postbiotics Inc candidate postbiotics include indole 3 propionate
Candidate Postbiotics Include Indole 3 Propionate, supplied by Postbiotics Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pmc12874720-231-1-2?v=Postbiotics+Inc
Average 86 stars, based on 1 article reviews
candidate postbiotics include indole 3 propionate - by Bioz Stars, 2026-07
86/100 stars
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indolepropionic acid  (Macklin Inc)
86
Macklin Inc indolepropionic acid
Indolepropionic Acid, supplied by Macklin Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pm41260454-64-0-12?v=Macklin+Inc
Average 86 stars, based on 1 article reviews
indolepropionic acid - by Bioz Stars, 2026-07
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indole-3-propionic-2,2-d2 acid  (Cambridge Isotope Laboratories)
90
Cambridge Isotope Laboratories indole-3-propionic-2,2-d2 acid
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
Indole 3 Propionic 2,2 D2 Acid, supplied by Cambridge Isotope Laboratories, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pmc08526691-193-48-62?v=Cambridge+Isotope+Laboratories
Average 90 stars, based on 1 article reviews
indole-3-propionic-2,2-d2 acid - by Bioz Stars, 2026-07
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d tryptophan d5  (Toronto Research Chemicals)
92
Toronto Research Chemicals d tryptophan d5
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
D Tryptophan D5, supplied by Toronto Research Chemicals, used in various techniques. Bioz Stars score: 92/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pmc09675477-160-11-24?v=Toronto+Research+Chemicals
Average 92 stars, based on 1 article reviews
d tryptophan d5 - by Bioz Stars, 2026-07
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indole 3 propionic acid  (Macklin Inc)
86
Macklin Inc indole 3 propionic acid
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
Indole 3 Propionic Acid, supplied by Macklin Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pmc12489916-82-7-17?v=Macklin+Inc
Average 86 stars, based on 1 article reviews
indole 3 propionic acid - by Bioz Stars, 2026-07
86/100 stars
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indole 3 propionic acid  (Muris Inc)
86
Muris Inc indole 3 propionic acid
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
Indole 3 Propionic Acid, supplied by Muris Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/pm41485070-16-35-19?v=Muris+Inc
Average 86 stars, based on 1 article reviews
indole 3 propionic acid - by Bioz Stars, 2026-07
86/100 stars
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5 methoxy l tryptophan 16 s  (Chem Impex International)
95
Chem Impex International 5 methoxy l tryptophan 16 s
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
5 Methoxy L Tryptophan 16 S, supplied by Chem Impex International, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/us11713325-704-28-34?v=Chem+Impex+International
Average 95 stars, based on 1 article reviews
5 methoxy l tryptophan 16 s - by Bioz Stars, 2026-07
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α-(1,3-dihydro-1,3-dioxo-2h-isoindo1-2-yl)-1h-indole-3-propanoic acid (rg-108, 10 μm)  (Cayman Chemical)
90
Cayman Chemical α-(1,3-dihydro-1,3-dioxo-2h-isoindo1-2-yl)-1h-indole-3-propanoic acid (rg-108, 10 μm)
a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA <t>indole-3-acetate,</t> IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.
α (1,3 Dihydro 1,3 Dioxo 2h Isoindo1 2 Yl) 1h Indole 3 Propanoic Acid (Rg 108, 10 μm), supplied by Cayman Chemical, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/d+2+indole+3+propionic+acid/us10568913-323-65-73?v=Cayman+Chemical
Average 90 stars, based on 1 article reviews
α-(1,3-dihydro-1,3-dioxo-2h-isoindo1-2-yl)-1h-indole-3-propanoic acid (rg-108, 10 μm) - by Bioz Stars, 2026-07
90/100 stars
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Image Search Results


a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF<CONV-R) (two-sided Welch’s t -test, fold change ≥ 1.5, p < 0.01). c, d Box and Whisker plots of fecal indoles ( c ) and bile acid profiles ( d ) as synthesized or mediated by microbiota, with the box ranging from the first quartile to the third while the whiskers going from each quartile to the minimum or maximum (GF, N = 12; CONV-R, N = 12), * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, two-sided Welch’s t -test; exact p values and adjusted p values (i.e., q values) are provided in Supplementary Data . SM sphingomyelin, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, 5-HT 5-hydroxytryptamine, NAS N-acetylserotonin, 5-MIAA 5-methoxyindole-3-acetate, Kyna kynurenate, Kyn L-kynurenine, AA anthranilate, XA xanthurenate, IAA indole-3-acetate, IPA indole-3-propionate, ILA indole-3-lactate, I3A indole-3-carboxaldehyde, L-DOPA L-3,4-dihydroxyphenylalanine, DHICA 5,6-dihydroxyindole-2-carboxylate, CDCA chenodeoxycholate, CA cholate, αMCA α-muricholate, TCDCA taurochenodeoxycholate, TCA taurocholate, TαMCA tauro α-muricholate, DCA deoxycholate, HDCA hyodeoxycholate, LCA lithocholate.

Journal: Nature Communications

Article Title: High-coverage metabolomics uncovers microbiota-driven biochemical landscape of interorgan transport and gut-brain communication in mice

doi: 10.1038/s41467-021-26209-8

Figure Lengend Snippet: a Variable importance plot of top 50 fecal metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed fecal pathways of phenylalanine, tyrosine, and tryptophan biosynthesis and metabolism, with significantly altered metabolites labeled in red (GF>CONV-R) or blue (GF

Article Snippet: Stable-isotope-labeling internal standards for a range of classical neurotransmitters and tryptophan catabolites, including acetylcholine-d13 (N,N,N-trimethyl-d9; 1,1,2,2-d4) (d13-ACh; catalog #D-1780), γ-aminobutyric acid-d2 (d2-GABA; catalog #D-1731), L-glutamine-2,3,3,4,4-d5 (d5-Gln; catalog #D-2532), L-tryptophan-2,3,3-d3 (d3-Trp; catalog #D-7419), serotonin-α,α,β,β-d4 (d4-5HT; catalog #D-1550), L-kynurenine (ring-d4, 3,3-d2) (d6-Kyn; catalog #DLM-7842), indole-3-acetic-2,2-d2 acid (d2-IAA; catalog #D-1709) and indole-3-propionic-2,2-d2 acid (d2-IPA; catalog #D-7686) were obtained from CDN Isotopes (Pointe-Claire, Quebec, Canada) and Cambridge Isotopes (Tewksbury, MA, USA).

Techniques: Labeling, Whisker Assay, Synthesized

a Variable importance plot of top 50 serum metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed serum pathways of phenylalanine, tyrosine and tryptophan biosynthesis and metabolism. c, d MetaMapp metabolomic networks of 88 metabolite pairs altered in feces ( c ) and serum ( d ), with nodes representing individual metabolites, edges for biochemical (KEGG reactant pairs) and chemical (Tanimoto coefficient > 0.7) relationships, and lower transparency for lower adjusted p values (<0.05, two-sided Welch’s t -test). TMAO trimethylamine N-oxide, PS phosphatidylserine, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, Kyn L-kynurenine, AA anthranilate, IAA indole-3-acetate, IPA indole-3-propionate, ILA indole-3-lactate, IArcA indole-3-acrylate, I3A indole-3-carboxaldehyde, Shikimate 3-P shikimate 3-phosphate, DHICA 5,6-dihydroxyindole-2-carboxylate, AKG α-ketoglutarate, L-DOPA L-3,4-dihydroxyphenylalanine, SULT sulfotransferase, CYP450 cytochrome 450, TCA cycle tricarboxylic acid cycle.

Journal: Nature Communications

Article Title: High-coverage metabolomics uncovers microbiota-driven biochemical landscape of interorgan transport and gut-brain communication in mice

doi: 10.1038/s41467-021-26209-8

Figure Lengend Snippet: a Variable importance plot of top 50 serum metabolites ( y -axis) ranked by contribution to mean decrease accuracy of Gini coefficient ( x -axis) in the random forest model for discerning group difference. b Diagram summary of perturbed serum pathways of phenylalanine, tyrosine and tryptophan biosynthesis and metabolism. c, d MetaMapp metabolomic networks of 88 metabolite pairs altered in feces ( c ) and serum ( d ), with nodes representing individual metabolites, edges for biochemical (KEGG reactant pairs) and chemical (Tanimoto coefficient > 0.7) relationships, and lower transparency for lower adjusted p values (<0.05, two-sided Welch’s t -test). TMAO trimethylamine N-oxide, PS phosphatidylserine, Phe L-phenylalanine, Tyr L-tyrosine, Trp L-tryptophan, Kyn L-kynurenine, AA anthranilate, IAA indole-3-acetate, IPA indole-3-propionate, ILA indole-3-lactate, IArcA indole-3-acrylate, I3A indole-3-carboxaldehyde, Shikimate 3-P shikimate 3-phosphate, DHICA 5,6-dihydroxyindole-2-carboxylate, AKG α-ketoglutarate, L-DOPA L-3,4-dihydroxyphenylalanine, SULT sulfotransferase, CYP450 cytochrome 450, TCA cycle tricarboxylic acid cycle.

Article Snippet: Stable-isotope-labeling internal standards for a range of classical neurotransmitters and tryptophan catabolites, including acetylcholine-d13 (N,N,N-trimethyl-d9; 1,1,2,2-d4) (d13-ACh; catalog #D-1780), γ-aminobutyric acid-d2 (d2-GABA; catalog #D-1731), L-glutamine-2,3,3,4,4-d5 (d5-Gln; catalog #D-2532), L-tryptophan-2,3,3-d3 (d3-Trp; catalog #D-7419), serotonin-α,α,β,β-d4 (d4-5HT; catalog #D-1550), L-kynurenine (ring-d4, 3,3-d2) (d6-Kyn; catalog #DLM-7842), indole-3-acetic-2,2-d2 acid (d2-IAA; catalog #D-1709) and indole-3-propionic-2,2-d2 acid (d2-IPA; catalog #D-7686) were obtained from CDN Isotopes (Pointe-Claire, Quebec, Canada) and Cambridge Isotopes (Tewksbury, MA, USA).

Techniques: