PubChem will discontinue several bioactivity analysis tools on November 1, 2018. This includes the BioActivity Summary, BioActivity DataTable, SAR, Structure Clustering, and Plot Service. A help document page is available outlining alternatives with the same or similar functionality.
Chemical Structure Clustering Tool clusters compounds/substances based on the structure (fingerprint) similarity using the Single Linkage algorithm. Please specify compounds/substances using the given input methods.