Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of nicotinic acetylcholine receptor modulators. Its reactive bromo and ethynyl functional groups allow for selective cross-coupling reactions, making it valuable in medicinal chemistry for constructing complex heterocyclic systems. Commonly employed in Sonogashira and Suzuki coupling reactions to build biaryl and enyne frameworks found in bioactive molecules. Also utilized in the preparation of kinase inhibitors and central nervous system agents.