pregnenolone

chemical compound
ChemicalSubstance type_of_chemical_entity Q412158
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pregnenolone

Summary

pregnenolone is a type of chemical entity[1]. pregnenolone ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (83 views/month).[2]

Key Facts

  • pregnenolone's instance of is recorded as type of chemical entity[3].
  • pregnenolone's chemical structure is recorded as Pregnenolone.svg[4].
  • pregnenolone's chemical structure is recorded as Pregnenolon.png[5].
  • pregnenolone's CAS Registry Number is recorded as 145-13-1[6].
  • pregnenolone's EC number is recorded as 205-647-4[7].
  • pregnenolone's canonical SMILES is recorded as CC(=O)C1CCC2C1(CCC3C2CC=C4C3(CCC(C4)O)C)C[8].
  • pregnenolone's InChI is recorded as InChI=1S/C21H32O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h4,15-19,23H,5-12H2,1-3H3/t15-,16-,17+,18-,19-,20-,21+/m0/s1[9].
  • pregnenolone's InChIKey is recorded as ORNBQBCIOKFOEO-QGVNFLHTSA-N[10].
  • pregnenolone's Library of Congress authority ID is recorded as sh97009184[11].
  • pregnenolone's chemical formula is recorded as C₂₁H₃₂O₂[12].
  • pregnenolone's subclass of is recorded as pregnane steroid[13].
  • pregnenolone's part of is recorded as cholesterol monooxygenase (side-chain-cleaving) activity[14].
  • pregnenolone's has use is recorded as medication[15].
  • pregnenolone's Commons category is recorded as Pregnenolone[16].
  • pregnenolone's MeSH descriptor ID is recorded as D011284[17].
  • pregnenolone's has part is recorded as carbon[18].
  • pregnenolone's ChEMBL ID is recorded as CHEMBL253363[19].
  • pregnenolone's Guide to Pharmacology Ligand ID is recorded as 2376[20].
  • pregnenolone's PDB structure ID is recorded as 1Q20[21].
  • pregnenolone's PDB structure ID is recorded as 4NKW[22].
  • pregnenolone's PDB structure ID is recorded as 4J6B[23].
  • pregnenolone's Freebase ID is recorded as /m/06t2kd[24].
  • pregnenolone's UNII is recorded as 73R90F7MQ8[25].
  • pregnenolone's ChemSpider ID is recorded as 8611[26].
  • pregnenolone's PubChem CID is recorded as 8955[27].

Why It Matters

pregnenolone ranks in the top 5% of type_of_chemical_entity entities by monthly Wikipedia readership (83 views/month).[2] pregnenolone has Wikipedia articles in 17 language editions, a strong signal of global cultural recognition.[28] pregnenolone is known by 20 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] . 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] . wikidata.org.
  10. [12] . PubChem. Retrieved . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . geneontology.org. Retrieved . geneontology.org. Provenance: wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . ChEMBL. Retrieved . wikidata.org.
  18. [20] . IUPHAR/BPS Guide to PHARMACOLOGY. 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] . Freebase Data Dumps. wikidata.org.
  23. [25] . Global Substance Registration System. Retrieved . wikidata.org.
  24. [26] . Q2311683. Retrieved . wikidata.org.
  25. [27] . PubChem. 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). pregnenolone. Retrieved May 3, 2026, from https://4ort.xyz/entity/pregnenolone
MLA “pregnenolone.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/pregnenolone.
BibTeX @misc{4ortxyz_pregnenolone_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{pregnenolone}}, year = {2026}, url = {https://4ort.xyz/entity/pregnenolone}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): pregnenolone — https://4ort.xyz/entity/pregnenolone (retrieved 2026-05-03)

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