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 medicinal chemistry for constructing complex heterocyclic systems. 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 fluorescent probes and receptor ligands due to its electron-rich aromatic framework.