NO WARRANTY DISCLAIMER
National Cancer Institute
NCI00: Since 1955, the National Cancer Institute has conducted extensive testing of materials for possible activity against different forms of cancer. A large subset of this data has been made available to the public.
The public NCI dataset consists of 160,000+ compounds, cancer and/or HIV screen data, LC50's, IC50's, EC50's and other datatypes. The 2000 version from Daylight is an attempt to gather all the available public NCI data.