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


Getting Started

Complete User Guide

Help Files


~371 KB PDF

 ~2 MB PDF


~196 KB PDF 

~1 MB PDF 



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.

    STNews - What's New on STN

      February 9, 2015 | Major New STN Release Delivers
      Essential Biomedical and Patent Content to IP
      January 26, 2015
    | Annual MEDLINE Reload on STN
      Features Enhanced Clinical Trial Information and the
      2015 MeSH Thesaurus

      January 23, 2015
    | STN Launches New Pricing
      Option for Information Brokers: Search Service
      Value Pricing

    View or sign-up for STNews e-Newsletter

    STN Training

    Training Events
      March 26, 2015
      10:00 am EDT
      Substance and Chemical Structure Searching in
      CAS REGISTRY and DCR on new STN

    Register for the above training classes here

      May 7, 2015
      9:00 am - 3:00 pm EDT
      STN Patent Forum

    Contact Us

    E-mail   Phone & Fax   800-753-4227 (North America)
        614-447-3700 (Worldwide)
        614-447-3751 (Fax)
            Important Information for Chemical Suppliers