CAS Registry Number

chemical identifier
Thing numbering_scheme Q102507
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CAS Registry Number

Summary

CAS Registry Number is a numbering scheme[1]. It draws 945 Wikipedia views per month (numbering_scheme category, ranking #2 of 10).[2]

Key Facts

  • CAS Registry Number's instance of is recorded as numbering scheme[3].
  • CAS Registry Number is operated by Chemical Abstracts Service[4].
  • CAS Registry Number is a type of registration number[5].
  • CAS Registry Number's topic's main category is recorded as Category:CAS registry number[6].
  • CAS Registry Number's main Wikidata property is recorded as P231[7].
  • CAS Registry Number's exact match is recorded as http://semanticscience.org/resource/CHEMINF_000446[8].
  • CAS Registry Number's number of records is recorded as {'amount': '+25605'}[9].
  • CAS Registry Number's number of records is recorded as {'amount': '+211934'}[10].
  • CAS Registry Number's number of records is recorded as {'amount': '+222000'}[11].
  • CAS Registry Number's number of records is recorded as {'amount': '+525697'}[12].
  • CAS Registry Number's number of records is recorded as {'amount': '+796479'}[13].
  • CAS Registry Number's number of records is recorded as {'amount': '+1026800'}[14].
  • CAS Registry Number's number of records is recorded as {'amount': '+1313848'}[15].
  • CAS Registry Number's number of records is recorded as {'amount': '+1601933'}[16].
  • CAS Registry Number's number of records is recorded as {'amount': '+1953447'}[17].
  • CAS Registry Number's number of records is recorded as {'amount': '+2231010'}[18].
  • CAS Registry Number's number of records is recorded as {'amount': '+2668212'}[19].
  • CAS Registry Number's number of records is recorded as {'amount': '+2988020'}[20].
  • CAS Registry Number's number of records is recorded as {'amount': '+2950000'}[21].
  • CAS Registry Number's number of records is recorded as {'amount': '+3360512'}[22].
  • CAS Registry Number's number of records is recorded as {'amount': '+3708027'}[23].
  • CAS Registry Number's number of records is recorded as {'amount': '+4077703'}[24].
  • CAS Registry Number's number of records is recorded as {'amount': '+4441929'}[25].
  • CAS Registry Number's number of records is recorded as {'amount': '+4787991'}[26].
  • CAS Registry Number's number of records is recorded as {'amount': '+5141872'}[27].

Body

Definition and Type

CAS Registry Number's instance of is recorded as numbering scheme[3]. It is a type of registration number[5].

Why It Matters

CAS Registry Number draws 945 Wikipedia views per month (numbering_scheme category, ranking #2 of 10).[2] It has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[28] It is known by 71 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] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . The Generation of a Unique Machine Description for Chemical Structures-A Technique Developed at Chemical Abstracts Service. wikidata.org.
  8. [10] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  9. [11] . From chemical documentation to chemoinformatics: 50 years of chemical information science. wikidata.org.
  10. [12] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  11. [13] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  12. [14] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  13. [15] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  14. [16] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  15. [17] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  16. [18] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  17. [19] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  18. [20] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  19. [21] . The Chemical Abstracts Service Chemical Registry System. I. General Design. wikidata.org.
  20. [22] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  21. [23] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  22. [24] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  23. [25] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. wikidata.org.
  24. [26] . The Chemical Abstracts Service Chemical Registry System. VIII. Manual Registration. wikidata.org.
  25. [27] . Growth and change of the world’s chemical literature as reflected in Chemical abstracts. 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). CAS Registry Number. Retrieved May 3, 2026, from https://4ort.xyz/entity/cas-registry-number
MLA “CAS Registry Number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/cas-registry-number.
BibTeX @misc{4ortxyz_cas-registry-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{CAS Registry Number}}, year = {2026}, url = {https://4ort.xyz/entity/cas-registry-number}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): CAS Registry Number — https://4ort.xyz/entity/cas-registry-number (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/cas-registry-number · 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. 19d ago · TiagoLubiana · 2026-05-15 view diff on Wikidata ↗
    Instance of
    Aliases
    Number of records {'amount': '+25605'}, {'amount': '+211934'}, {'amount': '+222000'} +39
    Operator Chemical Abstracts Service
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:1||1 */ [[Property:P14357]]: data_1002, Matched to [[:toollabs:mix-n-match/#/entry/289759572|CAS number (#289759572)]] in [[:toollabs:mix-n-match/#/catalog/7899|EDAM Ontology]] #m"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.