Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. Its ethynyl and chloro functional groups allow for selective cross-coupling reactions, making it valuable in building complex drug molecules. Also employed in agrochemical research for designing novel pesticides due to its pyridine backbone, which enhances bioavailability and target specificity. Commonly utilized in medicinal chemistry for structure-activity relationship (SAR) studies to optimize lead compounds.