• CAS Databases
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CAS editorial scientists build the highest quality and most up-to-date chemical databases in the world.

We review and intellectually index more than 10,000 major scientific journals, patents from 61 patent authorities, and other reputable web sources, providing pointers to the new and novel science disclosed in them.

Our information products, such as SciFinder and STN, are powerful and convenient ways to access CAS' database content.

• CAplus^SM includes 32 million records from the late 1800s to the present
• CAS Registry^SM, with more than 54 million small molecules (view latest numbers), is the gold standard for chemical substance information, including chemical structures, names, predicted and experimental properties, tags, and spectra
• CASREACT, our chemical reaction database, includes more than 39 million reactions and synthetic preparations
  

We also have expert staff researchers to help you locate the information you need.