Other CAS Products

CAS Client Services

CAS Client Services is a fee-based service that offers you several options for confirming and assigning CAS Registry Numbers (often referred to as CAS RNs or CAS Numbers) and obtaining CA Index Names.



CAS CD-ROM Product

National Chemical Inventories™

Most comprehensive collection of national inventory information for regulatory compliance.


International CODEN Service

The International CODEN Service serves the library and information service community. CODEN are unique, six-character codes that identify serial and nonserial publications produced worldwide. CODEN are assigned not only to chemistry-related literature but to publications in all subject areas. Upon request, we can assign CODEN to serial publications or retrieve and provide CODEN previously assigned to publications. For additional information, contact:

International CODEN Service
Phone: 614-447-3600, ext. 3163
Fax:     614-447-3746
E-mail: coden@cas.org


Free CAS Web-based Products

CASSISM (CAS Source Index) Search Tool

The CAS Source Index (CASSI) Search Tool is an online resource intended to support researchers and librarians who need accurate bibliographic information. Use this free tool to quickly identify or confirm journal titles and abbreviations for publications indexed by CAS since 1907, including serial and non-serial scientific and technical publications. Locate the bibliographic details you need quickly and easily. Search by Title, Abbreviation, CODEN, ISBN, or ISSN.

Common Chemistry™

A web resource that contains CAS Registry Numbers for approximately 7,900 chemicals of widespread general public interest.


Chemical Abstracts™ and the CA SELECTS™ family of products are no longer available. The intellectual content formerly available in these products can be accessed electronically in CAS products such as SciFinder and STN. To learn more about transitioning from CA Print, see our FAQs.

Contact Us

E-mail   Phone & Fax
help@cas.org   800-753-4227 (North America)
    614-447-3700 (Worldwide)
    614-447-3751 (Fax)

Contact Us

E-mail   Phone & Fax
help@cas.org   800-753-4227 (North America)
    614-447-3700 (Worldwide)
    614-447-3751 (Fax)