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Chemical Abstracts Service (CAS) is a division of the American Chemical Society, and produces Chemical Abstracts, and related products. It is located in Columbus, Ohio, USA. Chemical Abstracts is an index of the scientific literature in chemistry and related fields, supplemented by abstracts for almost all the articles. The print format has been published since 1907, but has now been superseded largely by its electronic format. 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. The American Chemical Society (ACS) is a learned society (professional association) based in the United States that supports scientific inquiry in the field of chemistry. ...
Nickname: The Arch City The Discovery City Location in the state of Ohio, USA Coordinates: Country United States State Ohio Counties Franklin, Delaware, and Fairfield Mayor Michael B. Coleman (D) Area - City 550. ...
Look up Index in Wiktionary, the free dictionary. ...
Chemistry (from Greek χημεία khemeia[1] meaning alchemy) is the science of matter at the atomic to molecular scale, dealing primarily with collections of atoms, such as molecules, crystals, and metals. ...
An abstract is an abbreviated summary of a research article, review, or any in-depth analysis of a particular subject or discipline, and is often used to help the reader quickly ascertain the paper’s purpose. ...
1907 (MCMVII) was a common year starting on Tuesday (see link for calendar) of the Gregorian calendar (or a common year starting on Wednesday of the 13-day-slower Julian calendar). ...
Files
The two principal files that are used to support the different products are the two files, CAplus and Registry. CAplus consists of bibliographic information and abstracts for all articles in chemical journals worldwide, and chemicall-related articles from all scientific journals, patents, and other scientific publications. Registry contains information about 27,000,000 organic and inorganic substances, and 57 million DNA sequences. The chemical information is produced by CAS; the sequence information comes from GenBank, produced by the National Institutes of Health. The chemical information is prepared by the CAS Registry System, which identifies each compound with a specific cas registry number , index name, and graphic representation of its chemical structure. The assignment of chemical names is done according the chemical nomenclature rules for CA index names , which is slightly different from the internationally standard IUPAC names, according to the rules of IUPAC part of a DNA sequence A DNA sequence (sometimes genetic sequence) is a succession of letters representing the primary structure of a real or hypothetical DNA molecule or strand, The possible letters are A, C, G, and T, representing the four nucleotide subunits of a DNA strand (adenine, cytosine, guanine...
The GenBank sequence database is an annotated collection of all publicly available nucleotide sequences and their protein translations. ...
The National Institutes of Health (NIH) is the primary agency of the United States government responsible for medical research. ...
CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ...
Chemical nomenclature is the system for naming chemical compounds. ...
IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ...
The International Union of Pure and Applied Chemistry (IUPAC) is an international non-governmental organization devoted to the advancement of chemistry. ...
Products The material from these basic and supplementary files, is searchable in many ways. CAS has two principal data base systems of its own, STN, and Scifinder.
STN | STN is a system designed primarily for search professionals, using a command language interface, rather than a graphics interface. In addition to the CAS files, it can also search many other files, similar to other commercial systems such as Dialog A command language is a domain-specific interpreted language; a common example of a command language are shell or batch programming languages. ...
The term dialogue (or dialog) expresses basically reciprocal conversation between two or more persons. ...
SciFinder SciFinder is a software application designed primarily for use by professional chemists in commercial organizations[1]. Versions for both the Windows and Macintosh operating systems are available. ScifinderScholar is a version without some supplementary features for multi-database searching designed for academic use, and is the product generally found in universities and other academic institutions. They are both designed with a graphics interface, makeing them particularly suitable for searching the Registry file for chemical structures.
See also PubChem is a database of chemical molecules . ...
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The Beilstein database is one of the largest databases in the area of organic chemistry. ...
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