(2,5-Dimethoxybenzyl)hydrazine hydrochloride is primarily utilized in organic synthesis and pharmaceutical research. It serves as a key intermediate in the preparation of various biologically active compounds, particularly those with potential therapeutic applications. The compound is often employed in the synthesis of hydrazone derivatives, which are explored for their pharmacological properties, including antimicrobial, anticancer, and anti-inflammatory activities. Additionally, it is used in the development of chemical probes and ligands for studying enzyme mechanisms and receptor interactions, making it valuable in drug discovery and biochemical research. Its role in constructing complex molecular structures also contributes to advancements in medicinal chemistry.