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ToxCast Data Generation: Chemical Lists

The list of EPA's ToxCast chemicals with publicly available high-throughput screening data is available on the CompTox Chemicals Dashboard. A complete list of ToxCast and Tox21 chemicals is also available for download. 

Comptox Chemicals Dashboard

The CompTox Chemicals Dashboard is an online tools and it provides access to a variety of information on around 875,000 chemicals currently in use. The chemical information is compiled from a variety of sources including the EPA’s computational toxicology research databases and public domain databases.


The list of ToxCast and Tox21 chemicals and associated information for 9,403 unique substances. The substances have unique identifiers and standard chemical information such as name, CASRN and structure.  

Chemical Summary Charts

ToxCast Chemical Lists