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STN - Your connection to science and technology

STN is an online database service that provides global access to published research, journal literature, patents, structures, sequences, properties, and other data. 

With STN, find precisely the science, technology, and patent information needed to make business-critical decisions:

• Assess risk for future research endeavors
• Defend corporate/organizational intellectual property
• Track competitive intelligence for existing products and those under development
• Access patent expiration and extension information
• Support strategic business planning

To setup a new STN account, complete and return the STN Agreement and Order Form. 

STN is operated jointly by CAS and FIZ Karlsruhe worldwide and is represented in Japan by JAICI.

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Multiple Interfaces

STN may be accessed through three search interfaces:

• STN Express - Comprehensive desktop access for experienced online searchers
• STN on the Web^SM - All the power of STN anytime, anywhere for experienced online searchers
• STN Easy - Web access for occasional or novice searchers

STN also provides unique tools for analysis and visualization and patent evaluation:

• New version! - STN AnaVist^TM - Analysis and visualization software for information professionals
• New! - STN Viewer^TM - A powerful workflow productivity tool for patent information users  

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Wide Subject Range

The unsurpassed collection of essential science and technology databases on STN covers a wide range of topics, including:

bioscience biotechnology business chemistry energy engineering health and safety

material science medicine patents pharmacology toxicology and more

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Key Sci-Tech Databases

STN offers a variety of worldwide databases, enabling you to quickly find information that may be difficult to locate elsewhere.  In addition to databases created by expert scientists at CAS, STN provides access to well-respected databases such as:

BEILSTEIN BIOSIS DWPISM EMBASE GENBANK

INPADOCDB INSPEC MEDLINE SCISEARCH

Additional databases on STN are from producers such as Adis International Limited, Cambridge Scientific Abstracts (CSA), IMS HEALTH, Prous Science, and Thomson Scientific, as well as worldwide patent offices.

STN is the only platform that offers the ability to search CAplus^SM, INPADOCDB, and the Derwent World Patents Index (DWPI) - key databases for determining patentability, state-of-the-art, infringement, and the legal status of patents - at one time.

In addition, STN provides the largest repository of publicly available sequence information - REGISTRY, GENBANK, DGENE (GENESEQ^TM), PCTGEN, and USGENE.

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Optimal Versions of CAS-Produced Databases

CAS, producer of the world's largest and most comprehensive databases of chemical information, offers the most current and complete versions of several databases on STN:

CA/CAplus CAOLDSM CASREACT CAS REGISTRYSM CHEMCATS

CHEMLIST CIN MARPAT TOXCENTERSM

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More information

For more information about STN, complete the Information Request Form or contact CAS Customer Care.

See also the STN Database Catalog (2.3 MB PDF) for short descriptions of each database and lists of producers and clusters.