trans-caffeic acid

chemical compound
ChemicalSubstance type_of_chemical_entity Q414116
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trans-caffeic acid

Summary

trans-caffeic acid is a type of chemical entity[1]. It ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (173 views/month).[2]

Key Facts

  • trans-caffeic acid's instance of is recorded as type of chemical entity[3].
  • trans-caffeic acid's chemical structure is recorded as Kaffeesäure.svg[4].
  • trans-caffeic acid's CAS Registry Number is recorded as 331-39-5[5].
  • trans-caffeic acid's EC number is recorded as 206-361-2[6].
  • trans-caffeic acid's canonical SMILES is recorded as C1=CC(=C(C=C1C=CC(=O)O)O)O[7].
  • trans-caffeic acid's InChI is recorded as InChI=1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)/b4-2+[8].
  • trans-caffeic acid's InChIKey is recorded as QAIPRVGONGVQAS-DUXPYHPUSA-N[9].
  • trans-caffeic acid's chemical formula is recorded as C₉H₈O₄[10].
  • trans-caffeic acid's subclass of is recorded as caffeic acid[11].
  • trans-caffeic acid's Commons category is recorded as Caffeic acid[12].
  • trans-caffeic acid's MeSH descriptor ID is recorded as C040048[13].
  • trans-caffeic acid's has part is recorded as oxygen[14].
  • trans-caffeic acid's has part is recorded as carbon[15].
  • trans-caffeic acid's has part is recorded as hydrogen[16].
  • trans-caffeic acid's ChEMBL ID is recorded as CHEMBL145[17].
  • trans-caffeic acid's Guide to Pharmacology Ligand ID is recorded as 5155[18].
  • trans-caffeic acid's PDB structure ID is recorded as 3HOF[19].
  • trans-caffeic acid's PDB structure ID is recorded as 4FB4[20].
  • trans-caffeic acid's PDB structure ID is recorded as 2O7D[21].
  • trans-caffeic acid's PDB structure ID is recorded as 1KOU[22].
  • trans-caffeic acid's PDB structure ID is recorded as 4YU7[23].
  • trans-caffeic acid's PDB structure ID is recorded as 4N0S[24].
  • trans-caffeic acid's PDB structure ID is recorded as 4EYQ[25].
  • trans-caffeic acid's PDB structure ID is recorded as 3S2Z[26].
  • trans-caffeic acid's Freebase ID is recorded as /m/07sw06[27].

Why It Matters

trans-caffeic acid ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (173 views/month).[2] It has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[28] It is known by 16 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] . Global Substance Registration System. Retrieved . wikidata.org.
  4. [6] . Global Substance Registration System. Retrieved . wikidata.org.
  5. [7] . PubChem. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . Medical Subject Headings. Retrieved . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . ChEMBL. Retrieved . wikidata.org.
  16. [18] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  17. [19] . Protein Data Bank. Retrieved . wikidata.org.
  18. [20] . Protein Data Bank. Retrieved . wikidata.org.
  19. [21] . Protein Data Bank. Retrieved . wikidata.org.
  20. [22] . Protein Data Bank. Retrieved . wikidata.org.
  21. [23] . Protein Data Bank. Retrieved . wikidata.org.
  22. [24] . Protein Data Bank. Retrieved . wikidata.org.
  23. [25] . Protein Data Bank. Retrieved . wikidata.org.
  24. [26] . Protein Data Bank. Retrieved . wikidata.org.
  25. [27] . Freebase Data Dumps. 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). trans-caffeic acid. Retrieved May 3, 2026, from https://4ort.xyz/entity/trans-caffeic-acid
MLA “trans-caffeic acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/trans-caffeic-acid.
BibTeX @misc{4ortxyz_trans-caffeic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{trans-caffeic acid}}, year = {2026}, url = {https://4ort.xyz/entity/trans-caffeic-acid}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): trans-caffeic acid — https://4ort.xyz/entity/trans-caffeic-acid (retrieved 2026-05-03)

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