Used in pharmaceutical synthesis as a protected intermediate for constructing bioactive molecules. The Boc group provides stability during reactions, while the carboxylic acid allows for coupling to amines or alcohols, enabling the formation of amides or esters. Commonly employed in the development of protease inhibitors and receptor ligands where piperazine scaffolds are needed. Its bifunctional nature makes it valuable in solid-phase and solution-phase peptide-like assembly, particularly in drug discovery for central nervous system agents and anti-inflammatory compounds.