Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. It participates in the preparation of heterocyclic compounds, especially in the formation of indoles and pyrazoles through cyclization reactions. Its hydrazine functionality allows it to act as a building block in coupling reactions, notably in the production of dyes and functional materials. Commonly employed in research settings for the development of novel bioactive molecules and in medicinal chemistry for structure-activity relationship studies.