Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antitubercular and antimicrobial agents. It serves as a building block in heterocyclic chemistry, facilitating the formation of fused ring systems like pyridopyrimidines and triazoles, which are important in drug design. Also applied in coordination chemistry as a ligand for metal ions, aiding in the creation of catalysts or functional materials. Its hydrazide-imide functionality allows for high reactivity in condensation reactions, making it valuable in the preparation of agrochemicals and specialty polymers.