QSAR modelling toxicity toward rats of inorganic substances by means of CORAL

CORAL ('CORrelation And Logic') is freeware available on the Internet www.insilico.eu/coral The aim of this program is to establish a correlation between an endpoint and descriptors calculated with a simplified molecular input line entry system (SMILES). Three models calculated by CORAL for toxicity towards rat (-pLD50) of inorganic substances (three random splits) have shown that CORAL could be a good tool to model this endpoint. The average statistical characteristics for the CORAL models are the following: n=38, r ²=0.8461, q²=0.8298, s=0.273, F=198 (subtraining set); n=37, r²=0.8144, s=0.322, F=154 (calibration set); and n=10, r ²=0.8004, R_{m (test)} ² = 0.7815, s=0.240, F=32 (validation set).