Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of enzyme inhibitors and bioactive molecules. Its constrained azetidine ring enhances metabolic stability and influences conformational rigidity, making it valuable in medicinal chemistry for optimizing drug potency and selectivity. Commonly employed in the design of peptidomimetics and central nervous system agents due to its ability to mimic amino acid structures while improving pharmacokinetic properties.