Chemical Abstracts Service

Chemical Abstracts Service. It is a division of the American Chemical Society and a globally recognized authority for chemical information. Founded in 1907, it is best known for producing the world's largest and most comprehensive database of chemical substances and related scientific literature. Its operations are headquartered in Columbus, Ohio, and it provides essential tools for researchers, corporations, and regulatory agencies worldwide.

History and development

The organization was established in 1907 by a committee of the American Chemical Society, with William A. Noyes playing a key early role. Its initial mission was to publish *Chemical Abstracts*, a periodical index summarizing global chemical research, under the leadership of its first editor, E. J. Crane. Throughout the 20th century, it underwent significant technological evolution, transitioning from printed volumes to computerized systems. A major milestone was the launch of the CAS Registry Number system in 1965, which created a unique identifier for every chemical substance. The advent of online databases, such as STN International and SciFinder, in the late 20th century transformed its services from manual literature searches to powerful digital research platforms.

Services and databases

Its primary offerings are centered around its vast, curated databases, most notably SciFinder and STN International. These platforms provide access to the CAS Registry, which contains over 200 million organic and inorganic substances, and the CAS References database, which indexes literature from thousands of scientific journals, patents from authorities like the United States Patent and Trademark Office and the European Patent Office, and conference proceedings. Other specialized resources include CAS Common Chemistry for public access to common substance data and CAS Formulus for formulation research. These tools are critical for applications in pharmaceutical research, materials science, and regulatory compliance with agencies like the Environmental Protection Agency.

CAS Registry Number system

The CAS Registry Number is a unique numerical identifier assigned to every chemical substance described in the scientific literature since 1965. This system was created to overcome the challenges of complex and variable chemical nomenclature, such as IUPAC nomenclature and trivial names. Each CAS RN is a hyphenated sequence with up to ten digits that carries no inherent chemical meaning but provides an unambiguous link to a specific molecular structure, including polymers, alloys, and biosequences. It has become an international standard, widely adopted in regulatory documents from the Food and Drug Administration, inventory lists like the Toxic Substances Control Act inventory, and safety sheets globally, ensuring precise substance identification across disciplines and languages.

Organization and operations

As a division of the American Chemical Society, it operates as a not-for-profit organization headquartered in a campus in Columbus, Ohio. Its operations involve a large staff of scientists, including chemists and indexers, who analyze and annotate global scientific literature and patent documents. This rigorous editorial process, often involving experts from institutions like the Massachusetts Institute of Technology and Stanford University, ensures high data quality and consistency. The organization collaborates with international partners, including the Japan Science and Technology Agency and various European patent offices, to maintain comprehensive global coverage. Its financial model relies on subscription fees for its databases, which fund its ongoing scientific indexing and technological development.

Impact and significance

Its work has profoundly shaped modern scientific research and industry by organizing the world's dispersed chemical information into a searchable, reliable system. The universal adoption of the CAS Registry Number by entities such as the World Health Organization, the European Chemicals Agency, and major corporations like Pfizer and BASF underscores its critical role in global communication, commerce, and safety. By providing authoritative data, it accelerates discovery in fields like drug discovery and nanotechnology, supports intellectual property protection through patent research, and aids in hazard assessment and environmental monitoring. It stands as an indispensable infrastructure for the global chemical enterprise, underpinning innovation and regulatory compliance across countless sectors.

Category:American Chemical Society Category:Chemical databases Category:Organizations based in Columbus, Ohio Category:1907 establishments in the United States