CINF 24

The CAS databases contain the largest collection of substance information from the world's chemistry related literature and patents. With over 28 million records for organic, inorganic, and polymeric substances in the CAS REGISTRYSM, over 670,000 Markush records in the MARPATŪ database, and over 2,700 controlled terms in CAplusSM describing various substance classes, the CAS databases present quite a challenge for searchers trying to balance precision and recall in their substance search queries. This talk will focus on how various tools and techniques that have been developed by CAS to work with their data collections can be woven together to make the most of the content of the CAS databases. It will focus on techniques that are especially useful for dealing with very broadly defined or imprecisely defined substance questions.