Used primarily as a chiral oxidizing agent in organic synthesis, this compound enables selective epoxidation of alkenes and oxidation of sulfides to sulfoxides with high enantioselectivity. Its strained oxaziridine ring facilitates oxygen transfer under mild conditions, making it valuable in the preparation of pharmaceutical intermediates and fine chemicals where stereochemical control is critical. It is also employed in the synthesis of bioactive molecules, including natural products and drug candidates, due to its ability to introduce oxygen atoms with predictable stereochemistry. The ethyl and phenyl substituents enhance stability and influence reactivity and selectivity in asymmetric transformations.