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All the power of STN anytime, anywhere for experienced online searchers

Features and Benefits
  • Web-browser access to STN®.
  • Full functionality for information professionals.
  • Menu interaction via Assistants.
  • Chemical structure searching.
  • Secure session feature (https).

Additional Information Contact CAS Customer Center for more information about STN on the Web.


STN News - What's New on STN

    July/August, 2016 | Incorporate PatentPak in STN 
    into your Chemical Name Search Workflow
    May/June, 2016 | PIUG Highlights and Export to Excel
    now in New STN
    March/April, 2016
| CHEMLIST Updated with
    Regulation Information from Vermont

View or sign-up for STN News e-Newsletter

STN Training

Training Events
        Polymers, Oligomers, and Oligosaccharides in
            November 29, 2016, 1 p.m. ET

        Substance and Chemical Structure Searching in
        CAS REGISTRY on New STN

            December 14, 2016, 1 p.m. ET
Click here to Register

Contact Us

E-mail   Phone & Fax   800-753-4227 (North America)
    614-447-3700 (Worldwide)
    614-447-3751 (Fax)