CAS is the only organization in the world whose objective is to find, collect and organize all publicly disclosed substance information.

We build and maintain the world's largest collection of molecular substances, reactions, and related content that is vital to the work of researchers.

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CAS REGISTRY has reached 100 million chemical substances

CAS Registry Numbers provide unique identifiers to access the exact chemical needed for research, safety and compliance.

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2015 SciFinder Future Leaders in Chemistry

Congratulations to our 2015 SciFinder Future Leaders in Chemistry!


Latest Feature: Insulin Drug Delivery

A look at recent patenting activity in insulin drug delivery.

 

SciFinder - The choice for chemistry research 

SciFinder provides access to CAS content and delivers the information they need to:

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Intellectual property professionals and patent examiners worldwide rely on STN for their scientific and technical information needs because STN delivers:

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No one else has more...

A global team of scientists is continually adding substance information from the world's disclosed chemistry to the CAS REGISTRYSM, the gold standard for chemical substance information.

 

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