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New on STN

July 2014

Retrieved BATCH results in DGENE, USGENE and PCTGEN are now available for 30 days

July 2014

CHEMCATS (Chemical Catalogs Online) on STN Enhanced with New Search and Display Fields and More Frequent Updates

June 2014

New Emtree Release Includes Changes in Cell Line Terminology

Meet us at

ICIC 2014, Heidelberg, 12.-14. Oct

5. IP Service World, Munich, 24.-25. Nov

STN User Meetings

Espoo, 21.08.2014
Bern, 21.10.2014
Essen, 28.10.2014

Chemical Abstracts Plus (CAplusSM) and CAS REGISTRYSM

Chemical Abstracts Plus (CAplusSM) is the most current and comprehensive bibliographic database of chemical information available from Chemical Abstracts Service (CAS). CAplus is directly linked to its companion file CAS REGISTRYSM which is the broadest collection of chemical substance information worldwide. The CAS databases CAplus and CAS REGISTRY offer intellectually analyzed content obtained from journal and patent literature.

Content and coverage of CAplus
CAplus covers patent and journal article references from all areas of chemistry, biomedical sciences, engineering, materials science and agricultural science.
Coverage goes back to 1907. The file is updated daily and now contains

  • more than 9.6 million documents from patent publications of 63 patent-issuing authorities
  • more than 38 million documents from more than 10,000 international journals, technical disclosures, books, conference proceedings, dissertations, reviews, etc.
  • patent references from 9 major patent authorities, available within 2 days of publication; records are fully indexed with in less than 27 days from the date of publication
  • full coverage of the International Patent Classification (IPC 8)
  • value-added content including substance-specific indexing (CAS Registry Numbers®) and controlled vocabulary for concept information.

Content and coverage of CAS REGISTRY
CAS REGISTRY is the world's largest substance database covering substance information on all types of organic and inorganic substances, including polymers, alloys, coordination compounds, and mixtures. All substance records contain a unique CAS REGISTRY number (RN). Coverage includes substances reported in the literature back to the early 1800s. The file is updated daily and contains

  • more than 88 million organic and inorganic substances and more than 65.5 million sequences
  • comprehensive substance information including chemical structures, trade names, systematic names, synonyms, and molecular formula
  • calculated and experimental property data.

Your Benefit

  • efficient and comprehensive retrieval of chemical
  • substance information from patent and non-patent literature
  • fast access to chemical patent information in English
  • enhanced search results from thesaurus-supported subject searching

A sample record explained
The list of all 80 CAS Sections is available
Details on the patent coverage in CAS databases
A list of core journals coverage by CAS is available
User Documentation on the CAS Databases