Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antitubercular drugs like isoniazid derivatives. Its hydrazine functionality allows for the formation of hydrazone linkages, making it valuable in medicinal chemistry for creating bioactive molecules. Also employed in the preparation of chelating agents and ligands for metal ions, useful in catalysis and analytical chemistry. Additionally, it serves in the synthesis of heterocyclic compounds, contributing to the discovery of new drug candidates and functional materials.