Used as a key intermediate in the synthesis of heterocyclic compounds, particularly in the preparation of pyrazole and indole derivatives, which are important scaffolds in pharmaceuticals. It serves as a building block in condensation reactions due to the presence of the hydrazine and imine functionalities, enabling the formation of nitrogen-containing rings. Commonly applied in medicinal chemistry for developing bioactive molecules, including antimicrobial and anticancer agents. Also utilized in the design of functional materials where controlled molecular geometry is required, taking advantage of the rigid (E)-configuration around the double bond.