Looking for CAS Registry Numbers or CA Index Names for known substances? For common and frequently regulated chemicals, you can use CAS Common Chemistry, an open community …

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.

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 …

Redistribution rights for CAS registry numbers are reserved by the American Chemical Society. “CAS registry” is a registered trademark of the American Chemical society.

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

Oct 8, 2024 · A CAS number is a unique identifier assigned to every chemical substance described in the open scientific literature. This number, typically comprising up to ten digits, …

The Chemical Abstracts Service (CAS) has developed a registry of unique numeric identifiers, aka CAS Numbers or CAS Registry Numbers, for more than 73 million organic and inorganic …

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.

CAS provides solutions and services that help empower scientific discoveries. Learn how CAS can facilitate your research and drive innovation.

Dec 3, 2025 · 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 …