Abstract
To promote the availability of reliable computer-based estimation methods for use in the regulatory assessment of chemicals, the European Chemicals Bureau (ECB) within the European Commission's Joint Research Centre (JRC) has developed a range of user-friendly and freely available software tools. The article gives an overview of four of these tools, explaining their main functionalities and applicability: Toxtree, Toxmatch, DART and the JRC QSAR Model Database. Toxtree predicts different types of toxicological hazard and modes of action by applying decision tree approaches; it can be used for initial hazard assessments. Toxmatch is a tool for chemical similarity assessment; it can be used to compare model training and test sets, to facilitate the formation of chemical categories and to support the application of read-across between analogues. DART (Decision Analysis by Ranking Techniques) provides a variety of Multi-criteria Decision Making (ranking) methods, and can be used to support the ranking of chemicals according to their environmental and toxicological concern. Finally, the JRC QSAR Model Database is a web-based inventory of (Q)SAR models to help industry and government authorities to identify suitable (Q)SARs for chemicals undergoing regulatory review. †Presented at the 13th International Workshop on QSARs in the Environmental Sciences (QSAR 2008), 8–12 June 2008, Syracuse, USA.
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