CAS, Chemical Abstracts Service Home Page

SciFinder - The choice for chemistry research

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.

And now PatentPak^TM, a robust new patent workflow solution, offers instant access to hard-to-find chemistry in full-text patents directly in SciFinder.

Intellectual property professionals and patent examiners worldwide rely on STN for their scientific and technical information needs because STN delivers:

unique content collection
unparalleled search power
proven reliability

STN provides an information advantage that empowers you to:

answer business-critical questions
mitigate risks of missed information
protect valuable intellectual property

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.