CTS: Chemical Transformation Simulator 1.2

Physicochemical Property Calculators

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EPI SuiteTM (Estimation Program Interface) - EPI Suite is a Windows-based suite of physical/chemical property and environmental fate estimation programs developed by EPA and SRC, formerly Syracuse Research Corporation.

ChemAxon - ChemAxon provides cheminformatics software platforms, applications and services to optimize the value of chemistry information in life science and other research and development.

Toxicity Estimation Software Tool (TEST) - TEST was developed by EPA to allow users to easily estimate the toxicity of chemicals using Quantitative Structure Activity Relationships (QSARs) methodologies. The software also contains QSAR models for a number of physicochemical properties.

OPERA - OPEn structure-activity/property Relationship App (OPERA) is a QSAR tool for predicting physicochemical and environmental fate properties.