Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and anticancer agents. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in cross-coupling reactions such as Suzuki-Miyaura and Buchwald-Hartwig aminations to introduce aryl or amine groups, enabling the optimization of biological activity in drug candidates. Also utilized in the preparation of fluorescent probes and optoelectronic materials due to its rigid aromatic framework and electron-deficient character.