A base ainda mão possui todas as substâncias químicas com nº de registro, mas já é bastante útil. No resultado da pesquisa aparece o nome indexado no Chemical Abstracts (CA Index Name – não necessariamente é um dos nomes recomendados pela União Internacional de Química – IUPAC), sinônimos (nomes sistemáticos, semissistemáticos, triviais, genéricos e comerciais patenteados), fórmula química na convenção de Hill (CxHyNz....), fórmula estrutural (incluindo configuração estereoquímica inequívoca utilizando os estereodescritores R e/ou S), quando aplicáveis. Compostos maiores formados por associações não-covalentes de compostos mais simples (compostos iônicos/sais, compostos de coordenação, complexos de inclusão etc.) mostram também o nº de registro no CAS de seus componentes e suas respectivas fórmulas.

Por: Leonardo Sisinno de Abreu (DESID/SE/MS)

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CAS Launches Free Web-Based? Resource "Common Chemistry" for General Public
Links to Wikipedia records provided in collaboration with Wikipedia volunteers

Columbus, Ohio (May 12, 2009) - Chemical Abstracts Service (CAS), a division of the American Chemical Society and the most comprehensive and authoritative source of chemical information, has launched a new, free, web-based resource called Common ChemistryTM.

This resource is helpful to non-chemists and others who might know either a chemical name or a CAS Registry Number of a common everyday chemical and want to pair both pieces of information.

Common Chemistry contains approximately 7800 chemicals of widespread and general interest, as well as all 118 elements from the periodic table. With the exception of some of the elements, all other substances in this collection were deemed of widespread interest by having been cited 1000 or more times in the CAS databases. Examples of substances in Common Chemistry include widely recognizable ones such as caffeine, benzoyl peroxide (acne treatment), and sodium chloride (table salt).

"Anyone can easily search by CAS Registry Number or chemical name and confirm the substance details, such as the CAS Registry Number, chemical names or synonyms, molecular formula, chemical structure, and a reciprocal Wikipedia link when available," said Christine McCue?, CAS Vice President, Marketing. "Visitors also have the ability to bookmark the page using social media tools, such as Delicious and Digg."

While not intended to be a comprehensive CAS Registry Number (CAS RN) lookup service, Common Chemistry does provide access to information on chemicals of general interest. The CAS Registry Number is recognized throughout the world as the most commonly used, unique identifier of chemical substances. The full CAS REGISTRYSM database contains more than 46 million organic and inorganic substances. Research discovery and patent tools such as SciFinder? and STN allow users to search the entire database.

CAS thanks the Wikipedia volunteers, especially Professor Martin Walker at SUNY Potsdam, who collaborated with CAS to provide the links to Wikipedia records (when available). The Common Chemistry database will be updated periodically and Wikipedia links will be added when possible.

About CAS
Chemical Abstracts Service (CAS), a division of the American Chemical Society, is the world's authority for chemical information. CAS is the only organization in the world whose objective is to find, collect and organize all publicly disclosed substance information. A team of global scientists curate and control the quality of our databases which are recognized by chemical and pharmaceutical companies, universities, government organizations and patent offices around the world as authoritative. By combining these databases with advanced search and analysis technologies (SciFinder® and STN®), CAS delivers the most current, complete, secure and interlinked digital information environment for scientific discovery.