We provide organic chemists with the building blocks and tools needed to successfully design and control small molecule synthesis. Regardless of the synthetic methods employed to create synthetic pathways in carbon-carbon, carbon-oxygen, and carbon-nitrogen bonds, we cover common reaction applications in cross-coupling, fluorination, metathesis, C-H functionalization, and photocatalysis. Discover our functionalized heterocycles, catalysts, ligands, chiral reagents, and more according to structure-activity relationships for unique chemical reactions.