Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in biological activity. Its strained azetidine ring enhances metabolic stability and influences the conformation of the final molecule, making it valuable in medicinal chemistry. Commonly employed in the preparation of enzyme inhibitors and receptor modulators, especially in central nervous system (CNS) and oncology-related drug candidates. The methoxymethyl group aids in solubility and can act as a protecting group during multi-step syntheses. Its compact structure allows for improved pharmacokinetic properties in drug design.