Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antihypertensive and antiarrhythmic drugs. It serves as a building block for pyridine-based heterocyclic compounds, which are important in medicinal chemistry. Also employed in the preparation of agrochemicals and dyes due to its reactive hydrazine and chloro functional groups. Its structure allows for easy modification, making it valuable in research and development of new bioactive molecules.