Screening Rules of Lead Compounds of Herbicide, Fungicide and Insecticide

In order to find screening rules suitable for lead compounds of pesticide,five descriptors: logarithm of partition coefficient of octanol/water (LogP),relative molar weight (MW),number of hydrogen-bond donors (NHD),number of hydrogen-bond acceptors (NHA),polar surface area (PSA) and carcinogenic and mutagenic toxicities of 242 fungicides,512 herbicides and 399 insecticides were calculated and analyzed.Screening rules suitable for lead compounds of herbicide,fungicide and insecticide were proposed.The results showed that correct rate of the rules proposed for fungicides,herbicides and insecticides were 73.3%,53.3% and 63.3%,respectively.