Our proprietary Building Blocks are small organic molecules (typically MW from 100 to 350) with various functional moieties, such as amines, aldehydes, carboxylic acids, etc. (more than 20). Design of our Building Blocks (14 000 items) is based on the expertise of Enamine and its scientific partners in heterocyclic, fluorine, sulfur and other chemistries, as well as assymetric synthesis. We take into account presence of pharmacophore groups and moieties, as well as originality and novelty of compounds.