Structure-based drug screening and ligand binding mode analysis have become key elements in the calculation process of modern drug development. It can not only discover potential compounds targeting specific targets, but also help explain the structure-activity relationship observed experimentally. Therefore, structure-based computer technology plays an essential role in all stages of drug development. At Alfa Chemistry, we provide a series of structure-based drug design (SBDD) services and our capabilities include virtual screening, flexible target sampling, skeleton transitions, de novo design, and estimation of the affinity between ligands and target proteins. Application of Structure-based Drug Design: Predicting the binding of small molecules to protein targets Calculating binding affinity