diphenhydramine

antihistamine medication
ChemicalSubstance type_of_chemical_entity Q413486
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diphenhydramine

Summary

diphenhydramine is a type of chemical entity[1]. diphenhydramine ranks in the top 0.21% of type_of_chemical_entity entities by monthly Wikipedia readership (4,356 views/month, #27 of 12,596).[2]

Key Facts

  • diphenhydramine's instance of is recorded as type of chemical entity[3].
  • diphenhydramine's chemical structure is recorded as Diphenhydramine 2D skeletal.svg[4].
  • diphenhydramine's physically interacts with is recorded as Histamine receptor H1[5].
  • diphenhydramine's CAS Registry Number is recorded as 58-73-1[6].
  • diphenhydramine's EC number is recorded as 200-396-7[7].
  • diphenhydramine's canonical SMILES is recorded as CN(C)CCOC(C1=CC=CC=C1)C2=CC=CC=C2[8].
  • diphenhydramine's InChI is recorded as InChI=1S/C17H21NO/c1-18(2)13-14-19-17(15-9-5-3-6-10-15)16-11-7-4-8-12-16/h3-12,17H,13-14H2,1-2H3[9].
  • diphenhydramine's InChIKey is recorded as ZZVUWRFHKOJYTH-UHFFFAOYSA-N[10].
  • diphenhydramine's ATC code is recorded as R06AA02[11].
  • diphenhydramine's ATC code is recorded as D04AA32[12].
  • diphenhydramine's chemical formula is recorded as C₁₇H₂₁NO[13].
  • diphenhydramine's subclass of is recorded as chemical compound[14].
  • diphenhydramine's has use is recorded as medication[15].
  • diphenhydramine's Commons category is recorded as Diphenhydramine[16].
  • diphenhydramine's MeSH descriptor ID is recorded as D004155[17].
  • diphenhydramine's has part is recorded as carbon[18].
  • diphenhydramine's has part is recorded as nitrogen[19].
  • diphenhydramine's has part is recorded as oxygen[20].
  • diphenhydramine's has part is recorded as hydrogen[21].
  • diphenhydramine's ChEMBL ID is recorded as CHEMBL657[22].
  • diphenhydramine's Guide to Pharmacology Ligand ID is recorded as 1224[23].
  • diphenhydramine's PDB structure ID is recorded as 2AOT[24].
  • diphenhydramine's Freebase ID is recorded as /m/0256qn[25].
  • diphenhydramine's UNII is recorded as 8GTS82S83M[26].
  • diphenhydramine's ChemSpider ID is recorded as 2989[27].

Why It Matters

diphenhydramine ranks in the top 0.21% of type_of_chemical_entity entities by monthly Wikipedia readership (4,356 views/month, #27 of 12,596).[2] diphenhydramine has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[28] diphenhydramine is known by 44 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] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  4. [6] . Global Substance Registration System. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  5. [7] . Global Substance Registration System. Retrieved . wikidata.org.
  6. [8] . PubChem. Retrieved . wikidata.org.
  7. [9] . PubChem. Retrieved . wikidata.org.
  8. [10] . PubChem. Retrieved . wikidata.org.
  9. [11] . DrugBank. wikidata.org.
  10. [12] . DrugBank. wikidata.org.
  11. [13] . PubChem. Retrieved . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . ChEMBL. Retrieved . wikidata.org.
  21. [23] . IUPHAR/BPS Guide to PHARMACOLOGY. Retrieved . wikidata.org.
  22. [24] . Protein Data Bank. Retrieved . wikidata.org.
  23. [25] . Freebase Data Dumps. wikidata.org.
  24. [26] . Global Substance Registration System. Retrieved . wikidata.org.
  25. [27] . Q2311683. 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). diphenhydramine. Retrieved May 3, 2026, from https://4ort.xyz/entity/diphenhydramine
MLA “diphenhydramine.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/diphenhydramine.
BibTeX @misc{4ortxyz_diphenhydramine_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{diphenhydramine}}, year = {2026}, url = {https://4ort.xyz/entity/diphenhydramine}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): diphenhydramine — https://4ort.xyz/entity/diphenhydramine (retrieved 2026-05-03)

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