CAS Source Index (CASSI) Search Tool
http://cassi.cas.org/

The CAS Source Index (CASSI) Search Tool is an online resource intended to support researchers and librarians who need accurate bibliographic information. This free resource can be used to quickly and easily look up or confirm publication titles and abbreviations, as well as CODEN, ISBN, or ISSN codes. The CASSI database contains a listing of publications indexed by Chemical Abstracts Service (CAS) since 1907. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.