CAS, Chemical Abstracts Service Home Page

SciFinder provides access to CAS content and delivers the information they need to:

increase productivity
achieve faster breakthroughs
make better decisions

With SciFinder you get:

more reactions
more substances
more biomedical content

at your fingertips than with any other source.

SciFinder Quote
Robert Koechley
Director of Information Management
Promega Corporation

The intuitive, award-winning application offers instant access to the most comprehensive collection of chemical substance and reaction information, and to more references than any other scientific search service.

Information professionals and patent searchers worldwide rely on STN as their scientific and technical resource of choice.

STN Quote
U.S.Patent & Trademark Office

The world's major patent offices depend on
STN for:

precise searching
comprehensiveness
timeliness
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of science and intellectual property information.

STN provides access to key scientific and intellectual property databases and
is the premier single source for the world's disclosed scientific and technical research.

STN is operated jointly by CAS and FIZ Karlsruhe worldwide and is represented in Japan by JAICI.

No one else has more...

A global team of scientists is continually adding substance information from the world's disclosed chemistry to the CAS REGISTRY^SM, the gold standard for chemical substance information.