4,4′-Dipyridyl
4,4′-Dipyridyl is a heterocyclic compound. 4,4′-Dipyridyl is utilized as an electronic and photosensitive building block and bidentate ligand in supramolecular chemistry. 4,4′-Dipyridyl can also be used as a dr_ug intermediate in the synthesis of paraquat, a widely used herbicide.