Used as a key chiral intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its rigid piperazine backbone with defined stereochemistry makes it valuable in the development of drugs targeting central nervous system disorders and infectious diseases. Commonly employed in asymmetric synthesis to introduce methyl-substituted nitrogen heterocycles, enhancing metabolic stability and binding selectivity in drug candidates. Also utilized in the preparation of protease inhibitors and receptor modulators due to its ability to mimic peptide motifs while improving bioavailability.