How many cas numbers are there

Buyer's Guide for Chemicals A directory of suppliers of chemicals and chemical products. More than , products are searchable by product name. ChemExper Chemical Directory You may search this database of "chemicals available in the world" by registry number, molecular formula or by chemical name or synonyms in different languages. ChemSpider Claims to be the "the richest single source of structure-based chemistry information" covering over 25 million compounds from almost sources.

You may search by systematic name, synonym, trade name, CAS registry number, etc. Articles usually include CAS registry number and structural diagrams as well as alternate names, identifiers and properties with links to other sources of information. Fisher Scientific You may search the Fisher Scientific chemical catalogs by chemical name, molecular formula, catalog number, or key word.

Choose "Advanced Search" to get all of the search options. Contains over 2, chemicals and material safety data sheets MSDS's. Sigma-Aldrich Corporation Home Page Sigma-Aldrich has an advanced search page see link below that allows you to search by chemical or product name, by registry number, by molecular formula, etc.

WWW Chemicals Another searchable collection of chemical catalogs which may be searched by chemical name, CAS registry number, field of expertise, molecular formula, etc. Dictionary of Organic Compounds , 5th ed. Thermochemical Data of Organic Compounds , 2nd ed.

According to the introduction, it "includes most naturally occurring, nitrogen-containing secondary metabolites of plant, microbial, or even animal origin. PubChem provides information on the biological activities of small molecules. Depending on the source of the data, the results can include registry numbers but may not identify them as such. Perform Search Perform Search. No results for your query. Feel free to inquire about a familiarization training session.

Since CAS Registry Numbers are not dependent upon any system of chemical nomenclature, they can: Provide a reliable common link between the various nomenclature terms used to describe substances Serve as an international resource for chemical substance identifiers used by scientists, industry, and regulatory bodies Why do regulatory agencies rely on CAS Registry Numbers? How can I learn more about these substances? Site search accepts advanced operators to help refine your query.

Learn more. The CAS team of highly trained scientists identifies, aggregates, and organizes all publicly disclosed chemistry information, creating the world's most valuable collection of content that is vital to innovation worldwide. Scientific researchers, patent professionals and business leaders around the world rely on a suite of research solutions from CAS to enable discovery and fuel innovation.

CAS is located in Columbus, Ohio. They can assist with general questions about CAS products and services, account setup and status, billing information, obtaining user documentation, and they can assist in developing search strategies when using CAS products. A CAS Registry Number itself has no inherent chemical significance but provides an unambiguous way to identify a chemical substance or molecular structure when there are many possible systematic, generic, proprietary or trivial names.

CAS Registry Numbers are used in many other public and private databases as well as chemical inventory listings and, of course, are included in all CAS-produced databases. Updated August 12, Cite this Article Format. Helmenstine, Anne Marie, Ph. Molecular Formula for Common Chemicals. Your Privacy Rights. To change or withdraw your consent choices for ThoughtCo.

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