4-hydroxybenzoic acid

chemical compound
ChemicalSubstance type_of_chemical_entity Q229970
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4-hydroxybenzoic acid

Summary

4-hydroxybenzoic acid is a type of chemical entity[1]. It ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (57 views/month).[2]

Key Facts

  • 4-hydroxybenzoic acid's instance of is recorded as type of chemical entity[3].
  • 4-hydroxybenzoic acid's chemical structure is recorded as 4-hydroxybenzoic acid 200.svg[4].
  • 4-hydroxybenzoic acid's CAS Registry Number is recorded as 99-96-7[5].
  • 4-hydroxybenzoic acid's EC number is recorded as 202-804-9[6].
  • 4-hydroxybenzoic acid's canonical SMILES is recorded as C1=CC(=CC=C1C(=O)O)O[7].
  • 4-hydroxybenzoic acid's InChI is recorded as InChI=1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)[8].
  • 4-hydroxybenzoic acid's InChIKey is recorded as FJKROLUGYXJWQN-UHFFFAOYSA-N[9].
  • 4-hydroxybenzoic acid's chemical formula is recorded as C₇H₆O₃[10].
  • 4-hydroxybenzoic acid's subclass of is recorded as monohydroxybenzoic acid[11].
  • 4-hydroxybenzoic acid's Commons category is recorded as 4-Hydroxybenzoic acid[12].
  • 4-hydroxybenzoic acid's has part is recorded as oxygen[13].
  • 4-hydroxybenzoic acid's has part is recorded as carbon[14].
  • 4-hydroxybenzoic acid's ChEMBL ID is recorded as CHEMBL441343[15].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 2PHH[16].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 2BUW[17].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 2BUR[18].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 4LKE[19].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 4LKD[20].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 4LKF[21].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 1G81[22].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 1BKW[23].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 1K0I[24].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 1IUV[25].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 1IUX[26].
  • 4-hydroxybenzoic acid's PDB structure ID is recorded as 3PCC[27].

Why It Matters

4-hydroxybenzoic acid ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (57 views/month).[2] It has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[28] It is known by 17 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 . commonchemistry.cas.org. Provenance: 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] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . ChEMBL. Retrieved . wikidata.org.
  14. [16] . Protein Data Bank. Retrieved . wikidata.org.
  15. [17] . Protein Data Bank. Retrieved . wikidata.org.
  16. [18] . Protein Data Bank. 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] . Protein Data Bank. Retrieved . 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). 4-hydroxybenzoic acid. Retrieved May 3, 2026, from https://4ort.xyz/entity/4-hydroxybenzoic-acid
MLA “4-hydroxybenzoic acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/4-hydroxybenzoic-acid.
BibTeX @misc{4ortxyz_4-hydroxybenzoic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{4-hydroxybenzoic acid}}, year = {2026}, url = {https://4ort.xyz/entity/4-hydroxybenzoic-acid}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 4-hydroxybenzoic acid — https://4ort.xyz/entity/4-hydroxybenzoic-acid (retrieved 2026-05-03)

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