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STN User Documentation

STN User Documentation is primarily for searchers who are familiar with using a command language to search STN and other online databases.  If you are new to STN, see our Guide for New Users.

Documentation is available for the following topics:

• STN Commands and Features
• Searching for...
  • Chemical literature and patents (CA/CAplus)
  • Substances: Getting Started in REGISTRY 
  • Structures (REGISTRY)
  • Sequences (REGISTRY)
  • Polymers (REGISTRY)
  • Coordination Compounds (REGISTRY) (PDF)
  • CAplus Super Roles and Document Types (REGISTRY) (STNote 34; PDF)
• Markush Structures (MARPAT)
• Patent Information 
• Reactions
• Property Data
• Citations

Or, browse by the type of documentation:

• Quick Reference Cards and Quick Reference Guides
• STNotes
• User References

Additional Information

• STN e-Learning and Training
• STN Express Support & Training
• STNews and STN Database News  
• What's New at CAS

To request printed copies of documentation, contact CAS Customer Care.