Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) that require piperazine moieties. Its protected functional groups allow selective reactions in multi-step organic syntheses, especially in the production of kinase inhibitors, antiviral agents, and central nervous system (CNS) drugs. The tert-butyl carbamate (Boc) group provides stability during reactions and can be easily removed under mild acidic conditions, making it ideal for solid-phase and solution-phase peptide-like synthesis. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to modulate solubility, bioavailability, and binding affinity.