ECHA: OPERA extension added to QSAR Toolbox

QSAR Toolbox, co-developed by ECHA and the Organisation for Economic Co-operation and Development (OECD), which was designed to conduct animal-free chemical hazard assessment and predict data gaps, has now been more empowered by addition of OPERA expetion that has been developed by U.S. National Institute of Environmental Health Sciences (NIEHS) and can predict properties related to the absorption, distribution and metabolism of substances which will furthur help in conducting in vitro tests.