Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for cancer treatment. Its structure allows for selective functionalization, making it valuable in constructing complex heterocyclic compounds in medicinal chemistry. Commonly employed in cross-coupling reactions such as Suzuki or Buchwald-Hartwig to introduce aryl or amino groups, enabling the optimization of biological activity in drug candidates. Also utilized in research settings for the preparation of novel thienopyridine derivatives with potential cardiovascular and anti-inflammatory applications.