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

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 …

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

Chemsrc provides free CAS Number Search engine to fast access over millions chemical structures, CAS number, MSDS, properties and associated information.

Each number represents only one substance and has no chemical significance but serves solely as an internationally observed substance identifier by scientists, industry and regulatory organizations.

The College of Arts & Science (CAS) is the founding school of New York University, and one of the three pillar institutions of NYU Arts & Science (with Liberal Studies and the Graduate School of Arts & …

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

Dec 16, 2025 · You can also identify your substance of interest by its CAS Registry Number®, which is universally used to provide a unique, unmistakable identifier for chemical substances.

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.

Its programs provide comprehensive and individualized services that assist clients to achieve their maximum degree of self-reliance. CAS services include psychiatric, medical, and vocational …