CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances.

Founded in 1914, the CAS is the world’s only actuarial organization focused exclusively on property and casualty risks and serves over 11,000 members worldwide.

Please click here to pay dues for CAS managed communities. NOTE: The CAS Management Company ID is “937”, see table below for Association ID. Both numbers are required to make your online …

CAS Registry Numbers (CAS RN) are simple and regular, convenient for database searches. They offer a reliable, common and international link to every specific substance across the various …

Quickly confirm chemical names, CAS Registry Numbers®, structures or basic physical properties by searching compounds of general interest or leveraging an API connection.

“CAS registry” is a registered trademark of the American Chemical society.

CAS (Chemical Abstracts Service) is a division of the American Chemical Society. It is a source of chemical information and is located in Columbus, Ohio, United States.

Jan 13, 2026 · CAS builds the world’s largest collection of human-curated scientific knowledge covering over 150 years of published science. Our tools are designed to address the challenges and …

Feb 18, 2025 · The Casualty Actuarial Society (CAS) is excited to announce the launch of the CAS Portal, our new and improved e-commerce platform and user database.

Access the world’s most comprehensive chemical substance and reaction data. Search by structure, name, CAS Registry Number®, or spectra data. Uncover relevant literature, patents, and regulatory …