2,6-Dichlorophenylhydrazine hydrochloride is primarily used in organic synthesis as a key intermediate for the preparation of various heterocyclic compounds. It plays a significant role in the synthesis of pharmaceuticals, particularly in the development of drugs with potential anti-inflammatory, antimicrobial, and anticancer properties. Additionally, it is utilized in the production of dyes and pigments, where it acts as a precursor in the formation of complex colorants. Its application extends to research laboratories, where it is employed in the study of chemical reactions and the development of novel organic molecules.