topotecan

chemical compound
ChemicalSubstance type_of_chemical_entity Q419953
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topotecan

Summary

topotecan is a type of chemical entity[1]. topotecan ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (42 views/month).[2]

Key Facts

  • topotecan's instance of is recorded as type of chemical entity[3].
  • topotecan's chemical structure is recorded as Topotecan Structural Formula V.1.svg[4].
  • topotecan's manufacturer is recorded as Pfizer[5].
  • topotecan's CAS Registry Number is recorded as 123948-87-8[6].
  • topotecan's EC number is recorded as 687-471-1[7].
  • topotecan's canonical SMILES is recorded as CCC1(C2=C(COC1=O)C(=O)N3CC4=C(C3=C2)N=C5C=CC(=C(C5=C4)CN(C)C)O)O[8].
  • topotecan's InChI is recorded as InChI=1S/C23H23N3O5/c1-4-23(30)16-8-18-20-12(9-26(18)21(28)15(16)11-31-22(23)29)7-13-14(10-25(2)3)19(27)6-5-17(13)24-20/h5-8,27,30H,4,9-11H2,1-3H3/t23-/m0/s1[9].
  • topotecan's InChIKey is recorded as UCFGDBYHRUNTLO-QHCPKHFHSA-N[10].
  • topotecan's ATC code is recorded as L01XX17[11].
  • topotecan's chemical formula is recorded as C₂₃H₂₃N₃O₅[12].
  • topotecan's subclass of is recorded as LSM-4296[13].
  • topotecan's has use is recorded as medication[14].
  • topotecan's Commons category is recorded as Topotecan[15].
  • topotecan's MeSH descriptor ID is recorded as D019772[16].
  • topotecan's has part is recorded as nitrogen[17].
  • topotecan's has part is recorded as carbon[18].
  • topotecan's ChEMBL ID is recorded as CHEMBL84[19].
  • topotecan's Guide to Pharmacology Ligand ID is recorded as 7101[20].
  • topotecan's PDB structure ID is recorded as 1RR8[21].
  • topotecan's PDB structure ID is recorded as 1K4T[22].
  • topotecan's PDB structure ID is recorded as 1RRJ[23].
  • topotecan's Freebase ID is recorded as /m/0c5m70[24].
  • topotecan's UNII is recorded as 7M7YKX2N15[25].
  • topotecan's ChemSpider ID is recorded as 54705[26].
  • topotecan's PubChem CID is recorded as 60700[27].

Why It Matters

topotecan ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (42 views/month).[2] topotecan has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[28] topotecan 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] . pfizer.com. pfizer.com. Provenance: wikidata.org.
  4. [6] . Global Substance Registration System. Retrieved . commonchemistry.cas.org. Provenance: wikidata.org.
  5. [7] . 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] . PubChem. Retrieved . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . 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). topotecan. Retrieved May 3, 2026, from https://4ort.xyz/entity/topotecan
MLA “topotecan.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/topotecan.
BibTeX @misc{4ortxyz_topotecan_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{topotecan}}, year = {2026}, url = {https://4ort.xyz/entity/topotecan}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): topotecan — https://4ort.xyz/entity/topotecan (retrieved 2026-05-03)

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