Chemical Abstracts Service

Chemical Abstracts Service. It is a division of the American Chemical Society and a globally recognized authority for chemical information. Headquartered in Columbus, Ohio, it is best known for maintaining the CAS Registry, the world's most comprehensive database of chemical substances. Its mission is to curate, organize, and disseminate chemical research data to scientists, patent offices, and corporations worldwide.

Introduction

Operating as a non-profit organization under the American Chemical Society, it provides indispensable tools for scientific discovery and intellectual property management. Its flagship database, SciFinder, is a premier research platform used by major pharmaceutical companies, academic institutions, and government agencies like the United States Patent and Trademark Office. The organization's work underpins critical advancements in fields ranging from materials science to drug discovery, ensuring researchers can navigate the vast landscape of published chemical literature.

History

The service was established in 1907, with E. J. Crane serving as a pivotal early director who shaped its scientific rigor. Initially publishing print editions of Chemical Abstracts, it began a monumental shift with the Chemical Abstracts Service Source Index to track journal information. A transformative moment came in 1965 with the launch of the CAS Registry Number system, a unique identifier that became an international standard. The digital era was embraced fully with the introduction of the STN International network in the 1980s and the revolutionary SciFinder client in the 1990s, moving its vast resources online.

Products and Services

Its primary offering is SciFinder, a sophisticated software platform for searching chemical literature, reactions, and regulatory data. The organization also operates STN International, a partnership with FIZ Karlsruhe providing professional-level search capabilities for patent analysts. Other key products include CAS Common Chemistry, a publicly accessible resource for common chemicals, and customized solutions like CAS SciFinder Discovery Platform and CAS Analytical Methods. These tools integrate deeply with research workflows at organizations like Pfizer, the Massachusetts Institute of Technology, and the European Patent Office.

Database Coverage

The core database, CAS Registry, contains over 200 million unique organic and inorganic substances and 70 million sequences, making it the largest of its kind. It exhaustively covers chemical research from thousands of scientific journals, including prestigious titles like Nature and Science, as well as patent documents from over 60 global authorities, including the World Intellectual Property Organization. The coverage spans from 1907 to the present, capturing literature from the dawn of modern chemistry through contemporary research in nanotechnology and biochemistry.

Indexing and Abstracting

Expert scientific analysts, often holding advanced degrees in chemistry, meticulously index and summarize documents from the global chemical literature. This process involves assigning precise CAS Registry Numbers, systematic chemical names, and detailed controlled vocabulary from the CAS Lexicon. Every entry includes a human-written abstract that concisely captures the document's key findings and methodologies. This rigorous curation ensures precise retrieval in systems used by the United States Food and Drug Administration, BASF, and Stanford University, distinguishing its data from automated indexing systems.

Impact and Influence

The CAS Registry Number is a universal identifier used in regulatory documents worldwide, including those from the Environmental Protection Agency and the European Chemicals Agency. Its databases are foundational for patent examination, helping offices like the Japan Patent Office assess novelty. The organization's work has directly accelerated research during global efforts, such as the development of therapeutics during the COVID-19 pandemic. By providing a trusted, curated pathway through chemical information, it has profoundly shaped the progress of modern chemistry and related sciences for over a century. Category:American Chemical Society Category:Scientific databases Category:Organizations based in Columbus, Ohio