Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of nicotinic receptor modulators and other neuroactive compounds. Its functional groups allow for selective cross-coupling reactions, making it valuable in building complex heterocyclic systems for drug discovery. Commonly employed in agrochemical research for designing novel pesticides and herbicides due to the bioactivity associated with halogenated pyridine derivatives. Also utilized in the preparation of fluorescent probes and organic semiconductors where aldehyde and halogen functionalities enable further derivatization and material tuning.