Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure compounds. Its oxazoline ring coordinates with metal catalysts, enabling stereoselective transformations such as alkylations, aldol reactions, and Diels-Alder cycloadditions. Commonly employed in pharmaceutical synthesis where control of stereochemistry is critical. The methylthio group can act as a directing group or be further functionalized, adding versatility in synthetic routes. Stable under various reaction conditions, making it suitable for multi-step organic syntheses.