Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of bioactive molecules targeting central nervous system disorders such as antidepressants and mood stabilizers. Its piperazine core protected by a tert-butyl carboxylate group allows for selective modification of the aldehyde and hydroxyl functional groups on the phenyl ring, making it valuable in creating analogs for drug discovery. The aldehyde enables conjugation via condensation reactions, while the hydroxyl group aids in solubility and further derivatization, useful in building complex heterocyclic systems. Commonly employed in medicinal chemistry for constructing piperazine-based inhibitors or receptor ligands.