Used as an intermediate in the synthesis of biologically active compounds, particularly pharmaceuticals. Its piperazine core with a chiral center and functional groups allows for selective reactions in drug development. Commonly employed in the preparation of kinase inhibitors and central nervous system agents. The tert-butyl carbamate (Boc) group provides protection during peptide or heterocycle synthesis, enabling controlled deprotection and further derivatization. The cyanomethyl moiety can be transformed into carboxylic acids, amines, or tetrazoles, expanding its utility in medicinal chemistry for building diverse molecular architectures.