Talk:Q18907859
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Autodescription — CAS Common Chemistry (Q18907859)
description: online database with CAS registry numbers by the Chemical Abstract Service
- Useful links:
- View it! – Images depicting the item on Commons
- Report on constraint conformation of “CAS Common Chemistry” claims and statements. Constraints report for items data
- See also
- This documentation is generated using
{{Item documentation}}.
Queries
[edit]@Egon Willighagen: Could you please add the following (or similar) queries to this talk page:
- Number of items that use CAS Common Chemistry (Q18907859) as a reference for the CAS RN
- Number of items that do not use CAS Common Chemistry (Q18907859) as a reference for the CAS RN
- …
Thanks in advance. --Leyo 12:18, 6 May 2021 (UTC)
- Related here are the two shape expressions E298 and E299. 128981 items with a CAS Registry Number (P231) are confirmed in CAS Common Chemistry (Q18907859): https://w.wiki/3Hjm And 788758 CAS RNs are not confirmed: https://w.wiki/3Hju. So, I assume the context is Wikipedia, and looking at the patch on the boxes, I guess it should only prefer the Wikidata CAS RN if it is confirmed. But that's not even the full story, sadly, because it can still be that the linked Wikipedia and Wikidata items are about different things. This is why I listed those as up for curation. Is it possible to turn the "if" around for now, to show Wikidata if there is no CAS RN in Wikipedia itself? If that one is conflicting with Wikidata, we see that in the curation report anyway. --Egon Willighagen (talk) 17:29, 6 May 2021 (UTC)