CAS registry numbers on "certain" Elsevier databases

From publisher, Elsevier's website at http://www.elsevier.com/wps/find/authored_newsitem.cws_home/companynews05_01105

Academic publishing company, Elsevier is providing enhanced electronic versions of its journal articles to CAS SciFinder publisher, and CAS in turn is helping Elsevier identify additional CAS Registry Numbers in certain of its databases.

The CAS Registry Number identification aspect of the agreement is being carried out periodically through an automated, first level, "machine comparison". That method is neither comprehensive nor detailed relative to many chemical structure conventions, and so this resulting addition of Registry numbers does not represent a complete comparison of Elsevier resources with the CAS Registry, the most comprehensive substance collection...From time to time more CAS Registry Numbers will be added.