Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of thienopyridine and thienopyrimidine derivatives which exhibit biological activity such as anti-inflammatory, antimicrobial, and kinase inhibition properties. It serves as a building block in medicinal chemistry for constructing heterocyclic compounds with potential therapeutic applications. Its functional groups allow for selective modifications, enabling the optimization of pharmacokinetic and pharmacodynamic profiles in drug design. Also employed in agrochemical research for the development of novel pesticides and herbicides due to its reactive scaffold.