provided by
provided by FIZ Karlsruhe

New on STN

March 2014

The latest release of the new STN platform, provides enhanced features and content that enable searchers to work more proficiently

February 2014

Access INFULL and DEFULL databases with STN Viewer

January 2014

DWPI: Latest Manual Code Revision goes live

Meet us at

PATINFO 2014- 36. Kolloquium der Technischen Universität Ilmenau über Patentinformation, Ilmenau, 04.-06. Jun

ICIC 2014, Heidelberg, 12.-14. Oct

STN User Meetings

Frankfurt, 06.05.2014
München, 13.05.2014
Essen, 22.05.2014

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 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 84 million organic and inorganic substances and more than 65.3 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