Used primarily as a chiral building block in organic synthesis, especially in the preparation of biologically active compounds. Its strained aziridine ring undergoes regioselective and stereospecific ring-opening reactions with nucleophiles, enabling the introduction of functionalized amine groups in pharmaceuticals and natural products. Commonly employed in the synthesis of amino acids, peptides, and beta-amino alcohols due to its ability to maintain stereochemical integrity. Also utilized in the development of enzyme inhibitors and as an intermediate in medicinal chemistry research.