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  1. CAS REGISTRY®

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

  2. Community Access Services

    Community Access Services (CAS) is a non-profit organization that helps communities of color in Buffalo and Erie County access healthcare and local resources. Our services and programs …

  3. CAS Registry Number - Wikipedia

    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 …

  4. CAS Number Search - NIST Chemistry WebBook

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

  5. CAS Number Search - Chemsrc

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

  6. CAS Common Chemistry

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

  7. Empowering Innovation & Scientific Discoveries | CAS

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