Home › Entities › type_of_chemical_entity › 21-crown-7

21-crown-7

chemical compound
ChemicalSubstance type_of_chemical_entity Q55176433
Press Enter · cited answer in seconds

21-crown-7

Summary

21-crown-7 is a type of chemical entity[1]. 21-crown-7 ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (1 views/month).[2]

Key Facts

  • 21-crown-7's instance of is recorded as type of chemical entity[3].
  • 21-crown-7's canonical SMILES is recorded as C1COCCOCCOCCOCCOCCOCCO1[4].
  • 21-crown-7's chemical formula is recorded as C₁₄H₂₁O₇[5].
  • 21-crown-7 is a type of crown ether[6].
  • 21-crown-7's Commons category is recorded as 21-crown-7[7].
  • 21-crown-7's mass is recorded as {'unit': 'Q483261', 'amount': '+308.183503236'}[8].

Why It Matters

21-crown-7 ranks in the top 6% of type_of_chemical_entity entities by monthly Wikipedia readership (1 views/month).[2]

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] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.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). 21-crown-7. Retrieved May 3, 2026, from https://4ort.xyz/entity/21-crown-7
MLA “21-crown-7.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/21-crown-7.
BibTeX @misc{4ortxyz_21-crown-7_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21-crown-7}}, year = {2026}, url = {https://4ort.xyz/entity/21-crown-7}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21-crown-7 — https://4ort.xyz/entity/21-crown-7 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/21-crown-7 · 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. 4d ago · KaleemBot bot · 2026-05-30 view diff on Wikidata ↗
    Subclass of → crown ether
    Instance of → —
    Mass → {'unit': 'Q483261', 'amount': '+308.183503236'}
    Instance of → type of chemical entity
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:21-کراؤن-7]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.