urocanic acid

pair of isomers
ChemicalSubstance type_of_chemical_entity Q30536
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urocanic acid

Summary

urocanic acid is a type of chemical entity[1]. It ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (13 views/month).[2]

Key Facts

  • urocanic acid's instance of is recorded as type of chemical entity[3].
  • urocanic acid's chemical structure is recorded as (E)-3-(1H-imidazol-4-yl)acrylic acid 200.svg[4].
  • urocanic acid's CAS Registry Number is recorded as 104-98-3[5].
  • urocanic acid's EC number is recorded as 203-258-4[6].
  • urocanic acid's canonical SMILES is recorded as C1=C(NC=N1)C=CC(=O)O[7].
  • urocanic acid's InChI is recorded as InChI=1S/C6H6N2O2/c9-6(10)2-1-5-3-7-4-8-5/h1-4H,(H,7,8)(H,9,10)/b2-1+[8].
  • urocanic acid's InChIKey is recorded as LOIYMIARKYCTBW-UHFFFAOYSA-N[9].
  • urocanic acid's chemical formula is recorded as C₆H₆N₂O₂[10].
  • urocanic acid's subclass of is recorded as carboxylic acid[11].
  • urocanic acid's subclass of is recorded as imidazole alkaloid[12].
  • urocanic acid's MeSH descriptor ID is recorded as D014560[13].
  • urocanic acid's Freebase ID is recorded as /m/0gvsj0[14].
  • urocanic acid's ChemSpider ID is recorded as 1145[15].
  • urocanic acid's PubChem CID is recorded as 1178[16].
  • urocanic acid's KEGG ID is recorded as C00785[17].
  • urocanic acid's MeSH tree code is recorded as D02.241.081.069.920[18].
  • urocanic acid's MeSH tree code is recorded as D03.383.129.308.960[19].
  • urocanic acid's ChEBI ID is recorded as 30817[20].
  • urocanic acid's found in taxon is recorded as Coprinopsis atramentaria[21].
  • urocanic acid's found in taxon is recorded as Hippospongia communis[22].
  • urocanic acid's found in taxon is recorded as Caenorhabditis elegans[23].
  • urocanic acid's Reaxys registry number is recorded as 8128219[24].
  • urocanic acid's isomeric SMILES is recorded as C1=C(N=CN1)/C=C/C(=O)O[25].
  • urocanic acid's Human Metabolome Database ID is recorded as HMDB0000301[26].
  • urocanic acid's Human Metabolome Database ID is recorded as HMDB0062562[27].

Why It Matters

urocanic acid ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (13 views/month).[2] It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.[28] It is known by 10 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . ChEBI. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  4. [6] . ECHA Substance Infocard database. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . Freebase Data Dumps. wikidata.org.
  13. [15] . Q2311683. Retrieved . wikidata.org.
  14. [16] . PubChem. Retrieved . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . [The basic ingredients of fungi. 10. Imidazole derivatives in the agaric Coprinus atramentarius Bull]. wikidata.org.
  20. [22] . N-haltige Inhaltsstoffe des PferdeschwammesHippospongia equina. wikidata.org.
  21. [23] . Modeling Meets Metabolomics-The WormJam Consensus Model as Basis for Metabolic Studies in the Model Organism. wikidata.org.
  22. [24] . ChEBI. Retrieved . wikidata.org.
  23. [25] . Q2311683. Retrieved . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. 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). urocanic acid. Retrieved May 3, 2026, from https://4ort.xyz/entity/urocanic-acid
MLA “urocanic acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/urocanic-acid.
BibTeX @misc{4ortxyz_urocanic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{urocanic acid}}, year = {2026}, url = {https://4ort.xyz/entity/urocanic-acid}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): urocanic acid — https://4ort.xyz/entity/urocanic-acid (retrieved 2026-05-03)

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