Mapping physico-chemical property space for commercial pesticides and drugs

The concept of pesticide-likeness has been established in previous studies in terms of molecular properties ranges including molecular weight, calculated logP, the number of H-bond donors and acceptors, the number of aromatic bonds (considered to be correlated with pesticide photostability) and the number of rotatable bonds (related to bioavailability) [1]. Calculated molecular properties were used to predict oral drug-likeness in the field of drug discovery. So far the concept of pesticide-likeness did not yield same interest in comparison to the drug-likeness. Compared to drugs, pesticides are expected to have different absorption, distribution, metabolism, excretion and toxicity properties.

In this study drug-likeness and pesticide-likeness concepts were compared and discussed for a set of 1741 commercial pesticides and a series of previously published 902 marketed drugs [2]. Their physicochemical property distributions were comparatively analyzed and the chemical space covered by drugs and pesticides was described using principal component analysis. Trends in constitutive properties of pesticides are discussed.

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