Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its piperazine core and protected amine group make it valuable in medicinal chemistry for constructing complex molecules, especially in the design of central nervous system agents, antiviral drugs, and receptor modulators. The tert-butyloxycarbonyl (Boc) protection allows for selective deprotection and further functionalization, while the methoxymethyl group enhances solubility and can act as a protecting group for secondary amines. Commonly employed in multi-step organic syntheses where enantiomeric purity is critical.