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carboxylic acid

oxoacid having the structure RC(=O)OH, used as a suffix in systematic name formation to denote the –C(=O)OH group including its carbon atom
ChemicalSubstance structural_class_of_chemical_entities Q134856
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Summary

carboxylic acid is a structural class of chemical entities[1]. It ranks in the top 3% of structural class of chemical entities entities by monthly Wikipedia readership (6,168 views/month).[2]

Key Facts

  • Canonical SMILES: OC([*])=O[3]
  • Subclass of: carbon oxoacid[4], organic acid[5], carbonyl compound[6]
  • Part of: ATPase-coupled carboxylic acid transmembrane transporter activity[7], carboxylic acid transmembrane transporter activity[8], carboxylic acid transmembrane transport[9]
  • Commons category: Carboxylic acids[10]
  • Has part(s): carboxyl[11], carboacyl group[12]
  • Topic's main category: Category:Carboxylic acids[13]
  • General formula: RC(=O)OH[14]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[15]
  • SMARTS notation: CX3[OX1H0-,OX2H1]CX3[OX1H0-,OX2H1]">[16]
  • CXSMILES: [*]C(=O)O |$_R$|[17]

Why It Matters

carboxylic acid has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[18] It is known by 129 alternative names across languages and contexts.[19]

References

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

Direct Wikidata claims

  1. [3] ↑ . ChEBI release 2021-07-01. wikidata.org.
  2. [4] ↑ . Compendium of Chemical Terminology. wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . Compendium of Chemical Terminology. wikidata.org.
  5. [7] ↑ . Gene Ontology release 2019-11-16. wikidata.org.
  6. [8] ↑ . Gene Ontology release 2019-11-16. wikidata.org.
  7. [9] ↑ . Gene Ontology release 2019-11-16. wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [18] ↑ . Wikidata sitelinks. wikidata.org.
  3. [19] ↑ . 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). carboxylic acid. Retrieved October 14, 2026, from https://4ort.xyz/entity/carboxylic-acid
MLA “carboxylic acid.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/carboxylic-acid.
BibTeX @misc{4ortxyz_carboxylic-acid_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{carboxylic acid}}, year = {2026}, url = {https://4ort.xyz/entity/carboxylic-acid}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): carboxylic acid — https://4ort.xyz/entity/carboxylic-acid (retrieved 2026-10-14)

Canonical URL: https://4ort.xyz/entity/carboxylic-acid · Last refreshed:

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. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 3kF4Lw
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  2. 17w ago · MariuszRokin · 2026-06-12 view diff on Wikidata ↗
    Svkkl authority id → 0233833-karboxylove-kyseliny
    "/* wbcreateclaim-create:1| */ Svkkl authority id: 0233833-karboxylove-kyseliny, [[:toollabs:quickstatements/#/batch/259599|batch #259599]]"
  3. 21w ago · Twofivesixbot bot · 2026-05-17 view diff on Wikidata ↗
    Instance of → structural class of chemical entities
    Aliases → —
    Has parts → —
    Topic's main category → Category:Carboxylic acids
    + 8 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|3 */ Yso id: 27282, mv to monolingual text names on YSO statements"
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