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Screenshot of the CAS Common Chemistry database with information about caffeine . A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number ) is a unique identification number , assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to ...
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific chemical by the Chemical Abstracts Service (CAS).This list complements alternative listings to be found at list of inorganic compounds and glossary of chemical formulae
The CAS Chemical Registry System was introduced in 1965. CAS developed a unique registry number to identify chemical substances. Agencies such as the U.S. Environmental Protection Agency and local fire departments around the world now rely on these numbers for the definite identification of substances. According to the ACS, this is the largest ...
Huge Molecular Database Elegant Mathematics LLC: Small molecules (most of entries have <100 atoms) major conformers with its 3D and easy search on them M good correlated with PubChem on data that is available on PubChem "HugeMDB". 102 million ICSC ILO International Chemical Safety Cards International Labour Organization: CAS, EC number ...
A number of available search modules are provided: The standard search allows querying for systematic names, trade names and synonyms and registry numbers; The advanced search allows interactive searching by chemical structure, chemical substructure, using also molecular formula and molecular weight range, CAS numbers, suppliers, etc. The ...
The International Chemical Identifier ( InChI, pronounced / ˈɪntʃiː / IN-chee) [3] is a textual identifier for chemical substances, designed to provide a standard way to encode molecular information and to facilitate the search for such information in databases and on the web. Initially developed by the International Union of Pure and ...
PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine, which is part of the United States National Institutes of Health (NIH). PubChem can be accessed for free through a web ...
The relationship between a CAS Registry Number and an INCI name is not always one-to-one. In some cases, more than one INCI name may have the same CAS number, or more than one CAS number may apply to an INCI name. For example, the CAS number 1245638-61-2 has the CA Index Name of 2-Propenoic acid, reaction products with pentaerythritol.