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kynurenic acid

chemical compound
Class type of: quinoline alkaloid Q642217

Facts

9 properties
Instance of
type of chemical entity
Subclass of
quinoline alkaloid[5]
Canonical SMILES
C1=CC=C2C(=C1)C(=O)C=C(N2)C(=O)O[3]
Chemical formula
C₁₀H₇NO₃[4]
Found in taxon
Ephedra altissima, Ephedra aphylla, Ephedra distachya, Ephedra foeminea, Ephedra fragilis, Ephedra intermedia, Ephedra major, Ephedra fasciculata, Ephedra aspera, Ephedra funerea, Ephedra nevadensis, Ephedra transitoria, Phycomyces blakesleeanus, Homo sapiens, Ephedra pachyclada[8][9][10][11][12][13][14][15][16][17][18][19][20][21]
Has part(s)
oxygen, carbon[6][7]
Mass
189.043 Da[22]
Physically interacts with
G protein-coupled receptor 35, G protein-coupled receptor 35[2]
Subject has role
excitatory amino acid antagonist, primary metabolite[23][24]
🏷️ Also known as
en kynurenic acid cs kyselina kynurenová de Kynureninsäure es Acido quinurenico es Ácido quinurénico fa کینورنیک اسید ja キヌレン酸 nl Kynureenzuur pl kwas kynureninowy pt Ácido quinurênico ru кинуреновая кислота sv Kynurensyra uk Кінуренова кислота zh 犬尿喹啉酸
🔖 Identifiers · 32
OpenAlex ID
C2776841986
CAS Registry Number
492-27-3
ChEBI ID
18344
ChEMBL ID
CHEMBL299155
ChemSpider ID
3712
DSSTOX compound identifier
DTXCID5040675
DSSTox substance ID
DTXSID8075417
DrugBank ID
DB11937
EC number
207-751-5
ECHA Substance Infocard ID
100.007.047
Freebase ID
/m/0g8vtg
Guide to Pharmacology Ligand ID
2918
Show all 32 identifiers +20
Human Metabolome Database ID
HMDB0000715
InChI
InChI=1S/C10H7NO3/c12-9-5-8(10(13)14)11-7-4-2-1-3-6(7)9/h1-5H,(H,11,12)(H,13,14)
InChIKey
HCZHHEIFKROPDY-UHFFFAOYSA-N
KEGG ID
C01717
KNApSAcK ID
C00026494, C00026453
MassBank accession ID
MSBNK-Fiocruz-FIO00643, MSBNK-Fiocruz-FIO00644, MSBNK-Fiocruz-FIO00645, MSBNK-Fiocruz-FIO00646, MSBNK-Fiocruz-FIO00647, MSBNK-Fiocruz-FIO00648, MSBNK-Fiocruz-FIO00649, MSBNK-Fiocruz-FIO00650, MSBNK-Fiocruz-FIO00651, MSBNK-Fiocruz-FIO00652, MSBNK-Osaka_Univ-OUF00292, MSBNK-RIKEN-PR100406
+9 moreMSBNK-RIKEN-PR100864, MSBNK-Washington_State_Univ-BML00236, MSBNK-Washington_State_Univ-BML00243, MSBNK-Washington_State_Univ-BML00250, MSBNK-Washington_State_Univ-BML81545, MSBNK-Washington_State_Univ-BML81546, MSBNK-Washington_State_Univ-BML81547, MSBNK-Washington_State_Univ-BML81548, MSBNK-GL_Sciences_Inc-GLS00094
MeSH descriptor ID
D007736
MeSH tree code
D03.066.942.505, D03.633.100.810.350.400
Microsoft Academic ID (discontinued)
2776841986
NMRShiftDB structure ID
20179948
NSC number
58973
PDB ligand ID
KYA
PDB structure ID
3WX9, 3AV7
Probes And Drugs ID
PD001631
PubChem CID
3845
Reaxys registry number
147451
SPLASH
splash10-01ox-0900000000-2a593c8017254be4a387, splash10-01ox-0900000000-59f3559c0b95c9411d2c, splash10-02tc-0900000000-57dbbfb8e12c60951d77, splash10-014i-1900000000-16ee11b3b9d30dd9e68c, splash10-000f-0900000000-a4b194b85fef656b9b65, splash10-0006-0900000000-7862c532805b6036dc67, splash10-0006-0900000000-5fe3171fdaece30b78c8, splash10-0006-0900000000-df3b5b36289798800ad8, splash10-0006-0900000000-d4c11672b9479b2cd4b6, splash10-0159-0498000000-3db9df2c3d8456d7ba63, splash10-0159-1985000000-f1c74ffc481c3d0faaa2, splash10-0006-1900000000-06f7059894cc245cb344
+21 moresplash10-0006-0900000000-89a88f44f08b8b68d5c1, splash10-0006-0900000000-c501751e61649c499767, splash10-0006-0900000000-51e6b7c920848310eccc, splash10-014i-0900000000-49a60bc6d08b6675b6c2, splash10-0006-0900000000-fa7f02af853906df3376, splash10-000i-0900000000-0489ebbdd17d84ce21ff, splash10-0006-0900000000-8f67f7c803140e9b5150, splash10-0006-0900000000-212cf0c288791545f66e, splash10-0006-0900000000-0fbbcff854f5a41fb318, splash10-0006-0900000000-d69a430b0eb34f38ad54, splash10-0006-0900000000-283eb0ee0b97bb78517b, splash10-0006-0900000000-dbe2d5d94fa3b0c5fd62, splash10-0006-0900000000-e0b7f5a65ea6f20576a8, splash10-0006-0900000000-26e24b471d975cba8830, splash10-00ko-3900000000-62d7519a0023cee52909, splash10-000i-9800000000-0df5bed13a2377aca63a, splash10-0159-1895000000-e25b66b0b42d1928cc67, splash10-0159-3895000000-6ba2750c5a9d9754abcc, splash10-000i-9500000000-887e5157431b2908f31e, splash10-0006-0900000000-e6b451ee354ed2717160, splash10-000i-0900000000-7a5c54ced5b83f291e67
SureChEMBL ID
5144405, 22979
UNII
H030S2S85J
UniChem compound ID
602251

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Found in taxon 15
Homo sapiens, Ephedra distachya, Ephedra fragilis, Ephedra intermedia, Ephedra major, Ephedra aspera, Ephedra altissima, Ephedra foeminea +7 more
Has part(s) 2
oxygen, carbon
Subject has role 1
primary metabolite
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Summary

kynurenic acid is a type of chemical entity[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  2. [3] ↑ . PubChem. Retrieved . wikidata.org.
  3. [4] ↑ . PubChem. Retrieved . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  8. [9] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  9. [10] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  10. [11] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  11. [12] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  12. [13] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  13. [14] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  14. [15] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  15. [16] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  16. [17] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  17. [18] ↑ . New observations on the secondary chemistry of world Ephedra (Ephedraceae).. wikidata.org.
  18. [19] ↑ . Transtorine, a New Quinoline Alkaloid from Ephedra transitoria. wikidata.org.
  19. [20] ↑ . Acidic metabolites from Phycomyces blakesleeanus. wikidata.org.
  20. [21] ↑ . Recon 2.2: from reconstruction to model of human metabolism. wikidata.org.
  21. [22] ↑ . PubChem. Retrieved . wikidata.org.
  22. [23] ↑ . Medical Subject Headings. Retrieved . wikidata.org.
  23. [24] ↑ . Reactome. reactome.org. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). kynurenic acid. Retrieved November 12, 2026, from https://4ort.xyz/entity/kynurenic-acid
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BibTeX @misc{4ortxyz_kynurenic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{kynurenic acid}}, year = {2026}, url = {https://4ort.xyz/entity/kynurenic-acid}, note = {Accessed: 2026-11-12}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 21w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Instance of → type of chemical entity
    Found in taxon → Ephedra altissima, Ephedra aphylla, Ephedra distachya +1
    Subclass of → quinoline alkaloid
    Subject has role → excitatory amino acid antagonist, primary metabolite
    + 3 other properties edited (see Wikidata diff for full list)
    "Changed [tr] labels, descriptions or aliases: QuickStatements 3.0 batch #37300"
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