The reference materials listed below provide information about features and search techniques for individual databases on STN.
For resources specific to various types of searches (e.g., bibliographic searching, substance searching. patent searching) please see the STN Training pages.
For more information on each STN database, please refer to the Database Summary Sheets.
CASM/CAplusSM
- CAS Coverage of Prophetic Substances
- CA Sections
- CA Section Thesaurus (PDF)
- CAS Coverage of Patents
- CAS Roles in CA/CAplus (PDF)
- CAS Standard Abbreviations
- CASLINK for One-step Structure Searching in CAS REGISTRYSM, MARPAT® and CAplus (PDF)
CAS REGISTRY
- A Guide to Adding Screens in STN Structure Searching (PDF)
- Basic Name Segment Dictionary (PDF)
- CAS REGISTRY: Finding CAS Registry Numbers (PDF)
- CAS REGISTRY: Stereoisomer Searching (PDF)
- CASLINK for One-step Structure Searching in CAS REGISTRY, MARPAT and CAplus (PDF)
- Names of Trans-Fermium Elements 101-110
- Naming and Indexing of Chemical Substances for Chemical Abstracts™ (PDF)
- Polymer Class Terms in the REGISTRY File (PDF)
- Property data documentation
- Searching Coordination Compounds (PDF)
- Searching for Polymer Information on STN (PDF)
- Searching Ring Systems in CAS REGISTRY (PDF)
- Sequence documentation
- STN Screen Dictionary for Structure Searching (PDF)
CASREACT®
- CASREACT User Guide (PDF)
- Getting Started in CASREACT (PDF)
EMBASE
- Emtree Release Notes - February 2019 (PDF)
- Emtree Updates - May 2019 (PDF)
IFIALL
MARPAT
- CASLINK for One-step Structure Searching in CAS REGISTRY, MARPAT and CAplus (PDF)
- MARPAT User Guide (PDF)
NAPRALERT
RTECS® (Registry of Toxic Effects of Chemical Substances)
SciSearch
*Content and features/functionality may vary based upon product license.