This category is not shown on its member pages unless the appropriate user preference (appearance → show hidden categories) is set.

Populated by:

• ((Chembox)), by number of |CASNon= entries.
• ((Infobox drug)), when |CAS_number2= is used.

Note: for this list, |CASNo=none counts as 1. This way, the category shows more like 'number of chemicals per article'.