(4-Methylbenzyl)hydrazine dihydrochloride is primarily used in organic synthesis as a key intermediate for the preparation of various pharmaceutical compounds. It serves as a building block in the development of hydrazide derivatives, which are often explored for their potential therapeutic properties, including antimicrobial, anticancer, and anti-inflammatory activities. Additionally, this compound is utilized in the synthesis of Schiff bases and other hydrazone derivatives, which are important in medicinal chemistry for designing drugs with specific biological targets. Its role in the production of fine chemicals and its application in research laboratories for studying chemical reactions and mechanisms further highlight its significance in the field of chemistry.