Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other biologically active compounds. Its halogenated structure allows for selective cross-coupling reactions, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in Suzuki and Buchwald–Hartwig reactions to introduce pyrazine-based scaffolds into drug candidates. Also utilized in agrochemical research for designing novel pesticides with improved efficacy and selectivity.