(4-Chlorobenzyl)hydrazine dihydrochloride is primarily utilized in organic synthesis as a key intermediate for the preparation of various pharmacologically active compounds. It is often employed in the development of hydrazine derivatives, which are crucial in the synthesis of drugs targeting central nervous system disorders, such as antidepressants and antipsychotics. Additionally, this chemical serves as a building block in the creation of heterocyclic compounds, which are widely used in medicinal chemistry for designing molecules with potential antibacterial, antifungal, and anticancer properties. Its role in the synthesis of Schiff bases also makes it valuable in the study of coordination chemistry and the development of metal complexes for catalytic applications.