CAS registry number validation results based on the following idea:

CAS numbers are validated against the 2021 CAS Common Chemistry databases, based on InChIKey match
validated numbers are detected on Wikipedia using a substring match

Therefore, a missing can have multiple reasons. The "category" pages likely will have to be solved; the missing CAS number on Wikipedia here reflects that the Wikidata and Wikipedia pages reflect different things: particularly, the sitelink is likely wrong.

Curation Feedback

The below expectations may be incorrect. If you analyzed the situation and the given CAS is not correct for the Wikipedia entry, the following could be the case:

the Wikipedia-Wikidata sitelink is incorrect (e.g. stereochemistry mismatch)
the InChIKey used for the match is incorrect.

Please report these things below under 'Curation notes' which I will monitor.

2021-04-06

5678 validated CAS registry numbers in Wikidata linked to Wikipedia pages (https://w.wiki/3A88).

552 CAS registry numbers in Wikipedia match Wikidata and CAS Common Chemistry. 21 do not, below.

Not categories

Expected the validated CAS registry number 99200-09-6 to be listed on Nebivolol but was missing — Preceding unsigned comment added by Egon Willighagen (talk • contribs) 12:33, 6 April 2021 (UTC)[reply]

Expected the validated CAS registry number 99200-09-6 to be listed on https://en.wikipedia.org/wiki/Nebivolol but was missing
Expected the validated CAS registry number 159997-94-1 to be listed on https://en.wikipedia.org/wiki/Biricodar but was missing
Expected the validated CAS registry number 101-29-1 to be listed on https://en.wikipedia.org/wiki/Diodone but was missing
Expected the validated CAS registry number 25520-73-4 to be listed on https://en.wikipedia.org/wiki/L-Dopaquinone but was missing
Expected the validated CAS registry number 14392-02-0 to be listed on https://en.wikipedia.org/wiki/Chromium-51 but was missing
Expected the validated CAS registry number 88909-96-0 to be listed on https://en.wikipedia.org/wiki/Virstatin but was missing
Expected the validated CAS registry number 7690-51-9 to be listed on https://en.wikipedia.org/wiki/Pelargonidin but was missing
Expected the validated CAS registry number 547-23-9 to be listed on https://en.wikipedia.org/wiki/Torulene but was missing
Expected the validated CAS registry number 3616-04-4 to be listed on https://en.wikipedia.org/wiki/Phosphocholine but was missing
Expected the validated CAS registry number 99007-20-2 to be listed on https://en.wikipedia.org/wiki/Pyridoxine/doxylamine but was missing
Expected the validated CAS registry number 53400-67-2 to be listed on https://en.wikipedia.org/wiki/Tiquinamide but was missing
Expected the validated CAS registry number 13520-69-9 to be listed on https://en.wikipedia.org/wiki/Iron(II)_perchlorate but was missing
Expected the validated CAS registry number 5982-99-0 to be listed on https://en.wikipedia.org/wiki/Androstanedione but was missing
Expected the validated CAS registry number 90-56-2 to be listed on https://en.wikipedia.org/wiki/Sarmentose_(chemistry) but was missing
Expected the validated CAS registry number 90-84-6 to be listed on https://en.wikipedia.org/wiki/Amfepramone but was missing
Expected the validated CAS registry number 644-64-4 to be listed on https://en.wikipedia.org/wiki/Dimetilan but was missing
Expected the validated CAS registry number 3393-18-8 to be listed on https://en.wikipedia.org/wiki/Deoxyinosine_monophosphate but was missing
Expected the validated CAS registry number 14596-10-2 to be listed on https://en.wikipedia.org/wiki/Americium-241 but was missing
Expected the validated CAS registry number 21019-23-8 to be listed on https://en.wikipedia.org/wiki/Desoxyvincaminol but was missing
Expected the validated CAS registry number 2124-57-4 to be listed on https://en.wikipedia.org/wiki/MK-7 but was missing
Expected the validated CAS registry number 2451-01-6 to be listed on https://en.wikipedia.org/wiki/Terpin but was missing

Curation notes

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