Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and antitumor agents. Its hydrazine and bromo functional groups allow for selective derivatization, enabling the construction of complex heterocyclic systems found in bioactive molecules. Commonly employed in medicinal chemistry for scaffold modification and library generation in drug discovery programs. Also utilized in the preparation of pyridine-based ligands for metal-catalyzed reactions, supporting applications in catalysis and materials science.