Chemical Abstracts Service

Chemical Abstracts Service (CAS) is a division of the American Chemical Society that provides a comprehensive database of chemical information. It collects and organizes data from scientific journals, patents, and other publications to help researchers and industries find information about chemical substances, reactions, and properties. CAS assigns unique identifiers, called CAS Registry Numbers, to chemicals, making it easier to search and reference them. Essentially, it serves as a vital resource for chemists and professionals worldwide, enabling them to access important information efficiently and support innovation in various fields, including pharmaceuticals, materials science, and environmental research.