Used primarily as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) that require functionalized piperazine moieties. Its structure allows for efficient coupling with various nucleophiles, making it valuable in constructing drug candidates targeting central nervous system disorders, metabolic diseases, and certain oncology pathways. The presence of the activated benzoyl chloride group enables rapid amide bond formation, while the methylpiperazine component contributes to solubility and bioavailability in final drug molecules. Commonly employed in research and development settings for lead optimization in medicinal chemistry.