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Chemical Abstracts Service (CAS) is a division of the American Chemical Society
American Chemical Society

The American Chemical Society is a learned society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has over 160,000 members at all degree-levels and in all fields of chemistry, chemical engineering and related fields....
, and produces Chemical Abstracts, and related products. It is located in Columbus, Ohio
Columbus, Ohio

Columbus is the Capital , the largest, and the most populous city of the U.S. state of Ohio. Located near the Geographic centers of the United States, Columbus is the county seat of Franklin County, Ohio, although parts of the city also extend into Delaware County, Ohio and Fairfield County, Ohio counties....
, USA. CAS provides the largest databases of publicly disclosed chemistry
Chemistry

Chemistry is the science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions....
-related information, makes them accessible through search and retrieval software and provides links to the original literature and patents. The term "Chemical Abstracts" is often used loosely to apply to all the different files and products, but the different parts now have specific names.






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Chemical Abstracts Service (CAS) is a division of the American Chemical Society
American Chemical Society

The American Chemical Society is a learned society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has over 160,000 members at all degree-levels and in all fields of chemistry, chemical engineering and related fields....
, and produces Chemical Abstracts, and related products. It is located in Columbus, Ohio
Columbus, Ohio

Columbus is the Capital , the largest, and the most populous city of the U.S. state of Ohio. Located near the Geographic centers of the United States, Columbus is the county seat of Franklin County, Ohio, although parts of the city also extend into Delaware County, Ohio and Fairfield County, Ohio counties....
, USA. CAS provides the largest databases of publicly disclosed chemistry
Chemistry

Chemistry is the science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions....
-related information, makes them accessible through search and retrieval software and provides links to the original literature and patents. The term "Chemical Abstracts" is often used loosely to apply to all the different files and products, but the different parts now have specific names. In 2007 the Chemical Abstracts Service was designated an ACS National Historical Chemical Landmark
ACS National Historical Chemical Landmarks

The National Historic Chemical Landmarks Program was launched by the American Chemical Society in 1992 and has recognized more than 60 landmarks to date....
 in recognition of its significance as the most comprehensive repository of research in chemistry and related sciences.

Databases

The two principal databases that support the different products are CAplus and Registry.

CAplus

consists of bibliographic information and abstracts for all articles in chemical journals worldwide, and chemistry-related articles from all scientific journals, patents, and other scientific publications.

Registry

contains information more than 40 million organic and inorganic substances, and more than 60 million protein and DNA sequences. The chemical information is produced by CAS; the sequence information comes from CAS and GenBank
GenBank

The GenBank sequence database is an open access, annotated collection of all publicly available nucleotide sequences and their protein translations....
, produced by the National Institutes of Health
National Institutes of Health

The National Institutes of Health is an agency of the United States Department of Health and Human Services and is the primary agency of the United States government responsible for biomedical and health-related research....
. The chemical information is prepared by the CAS Registry System, which identifies each compound with a specific CAS registry number
CAS registry number

CAS registry numbers are unique numerical identifiers for chemical elements, chemical compound, polymers, biological sequences, mixtures and alloys....
, index name, and graphic representation of its chemical structure. The assignment of chemical names is done according the chemical nomenclature
Chemical nomenclature

Chemical nomenclature is the system for naming chemical compounds.There are two systems of chemical nomenclature: organic and inorganic.* Organic compounds are named according to the IUPAC nomenclature of organic chemistry system....
 rules for CA index names, which is slightly different from the internationally standard IUPAC names
IUPAC nomenclature

IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. It is developed and kept up to date under the auspices of the International Union of Pure and Applied Chemistry ....
, according to the rules of IUPAC.

Products

The material from these basic and supplementary databases, is searchable in many ways. CAS databases are available via two principal database systems, STN, and SciFinder.

STN

STN International (Scientific & Technical Information Network) is a system operated jointly by CAS and FIZ Karlsruhe, and is intended primarily for information professionals, using a command language
Command language

A command language is a domain-specific language interpreted language; a common example of a command language are shell script or batch programming languages....
 interface rather than a graphics interface. In addition to CAS databases, STN also provides access to many other databases which are similar to other commercial systems such as Dialog
Dialog (online database)

Dialog is an online information service owned by ProQuest, who acquired it from Thomson Reuters in mid-2008.Dialog was one of the predecessors of the World Wide Web as a provider of information, though not in form....
.

SciFinder

SciFinder is a CAS software client
Client (computing)

A client is an Application software or system that accesses a remote service on another computer system, known as a Server , by way of a Computer network....
 application designed primarily for use by professional chemists in commercial organizations. Versions for both the Windows and Macintosh operating systems are available. SciFinder Scholar is a version designed for universities and other academic institutions and lacks some supplementary features for multi-database searching. They are both designed with a graphics interface, making them particularly suitable for searching the Registry file for chemical structures.

CAS released a Web version of SciFinder in 2008.

See also

  • FIZ Karlsruhe
  • PubChem
    PubChem

    PubChem is a database of Chemistry molecules. The system is maintained by the National Center for Biotechnology Information , a component of the National Library of Medicine, which is part of the United States National Institutes of Health ....
  • ChemSpider
    ChemSpider

    Chemspider is a Chemistry database. The system was first launched in March 2007 in a beta release form and transitioned to release in March 2008....
  • Chemical database
    Chemical database

    A chemical database is a database specifically designed to store cheminformatics. Most chemical databases store information on stable molecules....
  • Beilstein database
    Beilstein database

    The Beilstein database is one of the largest Chemical databases in the field of organic chemistry, in which compounds are uniquely identified by their Beilstein Registry Number....
  • Inorganic Crystal Structure Database


External links