CAS Registry Innovators Program FAQ

In order to receive your complimentary certificate, you must be an existing Premium or Standard ACS Member. If you are not currently a member, you can Join here. Upon payment, make note of your member number and return to the CAS REGISTRY Innovators (Members) page in your browser. You can then submit the request for the complimentary certificate as an existing active ACS member.

In order to receive the complimentary certificate, you must be an existing Premium or Standard ACS Member. You may follow the link provided to renew your ACS Membership. The ACS membership renewal allows you to authenticate your access with multiple options. Upon full payment of your membership dues, make note of your member number and return to the CAS REGISTRY Innovators page in your browser. You can then submit the request for the complimentary certificate as an existing active ACS member.

At the end of the ACS membership application process you will be given the opportunity to create an ACS -ID, if you don’t already have one. We encourage you to create the ACS- ID first to ensure you can access all your ACS Membership Benefits before returning to CAS REGISTRY Innovators page for submitting the request for the complimentary certificate.

CAS Registry Numbers (often referred to as CAS RN® or CAS Numbers) are universally used to provide a unique, unmistakable identifier for chemical substances. A CAS Registry Number itself has no inherent chemical significance but provides an unambiguous way to identify a chemical substance or molecular structure when there are many possible systematic, generic, proprietary or trivial names.

CAS Registry Numbers are used in many other public and private databases as well as chemical inventory listings and, of course, are included in all CAS-produced databases.

A CAS Registry Number is assigned to a substance when it is identified as novel and is added to the CAS REGISTRY database. Numbers are assigned using a special algorithm, developed by CAS.

CAS Registry Numbers are assigned when CAS scientists identify a unique chemical substance in the literature that has not been registered by CAS previously. Therefore, your discovery represents a “novel compound” in our data collection.