Used as a key chiral building block in the synthesis of biologically active compounds, particularly in pharmaceuticals where stereochemistry plays a critical role. Its rigid cyclopropane structure helps lock molecular conformation, enhancing selectivity and potency in drug candidates. Commonly employed in the development of antiviral agents, enzyme inhibitors, and central nervous system drugs. The presence of a carboxylic acid and a methyl ester functionality allows for selective derivatization, enabling the construction of complex molecules in asymmetric synthesis.