Customer Support

Experienced searchers and scientists of the STN helpdesk provide assistance free of charge. Contact us for all questions about  our products and services, e.g. about  STN database content, or how to develop effective search strategies.

Users in Europe should contact STN INTERNATIONAL - FIZ Karlsruhe at: 
Phone:  (+49) 7247 808-555
Fax: (+49) 7247 808-259
E-mail: helpdesk(at)fiz-karlsruhe(dot)de

Helpdesk hours of operation are from:
8.30 a.m. - 5.00 p.m. (CET) Monday - Friday

Users in North America should contact STN INTERNATIONAL - CAS Customer Center at:
(+1) 8007534227 (North America)
(+1) 6144473700 (outside North America)
E-mail: help(at)cas(dot)org

Helpdesk hours of operation are from:
8.00 a.m. - 6.00 p.m. (U.S. Eastern Time) Monday - Friday

Users in Japan should contact JAICI (Japan Association for International Chemical Information) STN Japan
Phone: (+81) 359783601 (Technical Service)
(+81) 359783621 (Customer Care)
Fax: (+81) 359783600
Helpdesk Page

Maximize the Value of STN with Global Value Pricing

Only STN Global Value Pricing provides unlimited access to the broad collection of high-quality patent, non-patent and substance content STN offers, including CAS content and Derwent World Patents Index^® under a single flat-fee contract.

With Global Value Pricing, all of the valuable content and features STN offers are included - there is never a need to compromise comprehensiveness or restrict content access.

Global access:

• Unlimited access to all STN content
• Unlimited use of all STN features and tools
• Unlimited number of users and sites globally

Flexibility and freedom:

• Maximize comprehensiveness
• Optimize efficiency of search workflow
• Explore more content and features

Budget predictability and administrative simplicity:

• Single, fixed-cost contract covering all content
• Standard renewal pricing not based on usage
• Multi-year agreement
• Industry-leading account support

For additional information on STN pricing and to get a quote for your organization, contact your STN Service Center.

All STN use is subject to the STN License Agreement Information Use Policies, and any applicable data use policies and restrictions set forth by third-party database producers. Some restrictions apply.

• STN Gerneral Terms & Conditions (PDF)
• CAS Information Use Policies
• Clarivate Terms of Business
• STN Information Keep & Share Program  (PDF)
• Usage Terms by Database - see also HELP USAGE terms, available in each database on STNext

To get access to STN, please fill out an STN Agreement & Order Form and request STN Login IDs.

Account Setup for STN (PDF)
Terms and Conditions (PDF)
Additional STN Login IDs (PDF)