Date	Severity	Status	Feedback
Feb 4 2014 1:28PM	Normal	Acknowledged	I would like to see CAS numbers in the chemical information (in general). Thank you for your feedback. We have CAS registry numbers available on many records. Where available, these can be found in the synonyms infobox with the tag [RN]. Please note that as the CAS registry is a closed source, we cannot verify all of these registry numbers. We have a tiered set of confidence in these identifiers, as with all other synonyms - RNs in bold have been verified correct by us, ones that have been underlined have been confirmed by users, and ones in normal font have not been confirmed.