Used as a key chiral intermediate in the synthesis of pharmaceuticals, particularly in the production of antiviral agents such as hepatitis C virus (HCV) protease inhibitors. Its cyclopropane scaffold with defined stereochemistry enables precise construction of complex molecules, enhancing drug potency and metabolic stability. Commonly employed in asymmetric synthesis to introduce constrained amino acid motifs into peptide-based drugs. Also utilized in research for developing novel bioactive compounds requiring rigid structural elements.