Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) that require piperazine-based structural motifs. Its protected piperazine ring allows for selective reactions in multi-step organic syntheses, making it valuable in drug discovery for central nervous system agents, antipsychotics, and kinase inhibitors. The ester group enables further functionalization, such as hydrolysis or amidation, to build complex molecules. Commonly employed in medicinal chemistry research for constructing libraries of bioactive compounds.