Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) that require piperazine ring systems. Its cyano and tert-butoxycarbonyl (Boc) functional groups allow for selective chemical modifications, making it valuable in drug discovery for building complex molecules. Commonly employed in the preparation of kinase inhibitors, antiviral agents, and central nervous system (CNS) active drugs. The Boc group provides protection during peptide-like synthesis, enabling controlled stepwise reactions in multi-stage organic syntheses.