Used as a chiral building block in the synthesis of pharmaceuticals and biologically active compounds. Its epoxide ring allows for regioselective and stereospecific ring-opening reactions, making it valuable in asymmetric synthesis. Commonly employed in the preparation of beta-amino alcohols and chiral intermediates for drugs, including protease inhibitors and antiviral agents. Also utilized in the development of enantiomerically pure epichlorohydrin derivatives. Its phthalimide group acts as a protected amine, enabling stepwise construction of complex molecules in medicinal chemistry.