The following resources are available to assist you with using STN Express® software.

Version Getting Started Complete User Guide Help Files
~377 KB PDF 
~4 MB PDF 
8.5 ~371 KB PDF ~2 MB PDF HTML
8.4 ~196 KB PDF  ~1 MB PDF  HTML


For information on using CAS Registry BLAST, view this PDF or click here for additional details. 


Contact CAS Customer Center for more information about STN Express.

    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
            CAS REGISTRY
                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)