Used as an intermediate in the synthesis of quinoline-based pharmaceuticals and bioactive compounds. Its hydrazine functional group allows for derivatization into heterocyclic systems, making it valuable in developing antimicrobial, antifungal, and anticancer agents. Commonly employed in coordination chemistry to form metal complexes with catalytic or sensor applications. Also utilized in the preparation of fluorescent probes and dyes due to the quinoline ring’s inherent photophysical properties.