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 functionality make it valuable in medicinal chemistry for constructing drug candidates targeting central nervous system disorders, metabolic diseases, and infectious diseases. The (R)-enantiomer specificity supports selective interactions with biological targets, enhancing drug efficacy and reducing side effects. Commonly employed in multi-step organic syntheses where a protected, enantiomerically pure piperazine unit is needed.