Used as a key intermediate in the synthesis of active pharmaceutical ingredients, particularly in the development of protease inhibitors and other bioactive molecules. Its epoxide functionality allows for selective ring-opening reactions, enabling the introduction of complex side chains in drug structures. Commonly employed in medicinal chemistry for building chiral intermediates due to its reactivity and stability under various reaction conditions. Also utilized in the preparation of specialty polymers and functionalized resins where controlled cross-linking or grafting is required.