Molecular modelling is a set of (computer-based) methods for calculating, modelling, and modifying the structures and reactions of molecules, as well as the properties that are influenced by these three-dimensional structures. Molecular modelling has become a crucial aspect of understanding, describing, and predicting the features of tiny organic compounds that could be used as drug candidates. Drug discovery (virtual screening), Compound synthesis (conformational analysis and reaction planning), activity rationalization (docking and molecular dynamics simulations), and lead optimization (including the prediction of anti-target effects) are all areas where modelling approaches are used.
Small molecule drug discovery can be a difficult and time-consuming procedure. A typical workflow starts with the identification of hits and the creation of assays and concludes with the selection of preclinical candidates. Small molecules are used to treat a wide range of diseases and conditions, and their mechanisms of action can be fairly different. They are also exploited to treat a wide range of diseases and conditions because of their small size and general physiochemical features.