Used as a key intermediate in the synthesis of various pharmaceuticals, particularly in the development of antiviral and anticancer agents. It serves as a building block for heterocyclic compounds due to its reactive hydrazine group, enabling the formation of fused ring systems like triazines and pyrazoles. Commonly employed in medicinal chemistry for designing kinase inhibitors and antimicrobial drugs. Also utilized in agrochemicals for the development of herbicides and plant growth regulators. Its ability to chelate metals makes it useful in catalysis and material science applications.