Chemical Abstracts General Subject Searching

• STN User Documentation (Complete List)
• Chemical Abstracts Genderal Subject Index Headings (CA Index Guide Appendix I)
• CAS Standard Abbreviations and Acronyms
• Frequently Used CA Index Headings for Classes of Compounds
• CAS Roles (STN Quick Reference Card)
• CAS Roles
• How to use the new features: SciFinder

Other Chemical Subject Searches

• Chemical Acronyms and Abbreviations Database at Indiana University
• ARGH: Biomedical Acronym Resolver
• Medical-Chemistry Glossary

Thesauri and Other Word Lists

Thesauri can be used to increase the precision of your search.

• NLM's MeSH (Medical Subject Headings)
• NLM's Unified Medical Language System (UMLS)
• MedDRA Medical Dictionary for Regulatory Activities
• NASA Thesaurus
• PACS - Physics and Astronomy Classification Scheme
• Index to Organism Names (ION) (Thomson)
• IUPAC Gold Book provides both alphabetical and thematic (i.e. chemistry, math-physics, general) indexes, as well as an extensive listing of IUPAC source publications