This compound is primarily used in the synthesis of pharmaceutical intermediates, particularly in the development of biologically active molecules. Its reactive benzoyl chloride group makes it a valuable reagent for forming amide bonds, which are crucial in the construction of various drug candidates. It is often employed in the preparation of compounds targeting neurological disorders, as the 4-methylpiperazine moiety can enhance blood-brain barrier penetration. Additionally, it finds application in the production of small molecule inhibitors for enzymes and receptors, contributing to drug discovery efforts in oncology and other therapeutic areas. Its hydrochloride form ensures stability and solubility, making it suitable for use in organic synthesis and medicinal chemistry research.