• STN^® provides information you can trust
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STN^® provides information you can trust

When your research project requires the most precise and accurate scientific information, you can rely on STN.

• Empower your decision-making.
  
  Information and intellectual property professionals use STN to find business-critical data and information they need to  
  • Assess risk for future research endeavors
  • Defend intellectual property
  • Track competitive intelligence for existing products and those under development
  • Access patent expiration and extension information
  • Support strategic business planning

CAS' STN databases offer the largest collection and depth of chemical and related information compared to other commercial web based databases. In addition, CAS is the only company that has a unique, proprietary, chemical structure searching capability using its STN Express software. No other source can successfully meet the USPTO's requirements.

U.S. Patent Office, August 20, 2010 

Solicitation Letter, Access to commercial databases
with chemical and related information