Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure compounds such as pharmaceuticals and fine chemicals. Its rigid oxazolidine ring structure enables effective stereocontrol during key reactions like aldol additions, alkylations, and Diels-Alder cycloadditions. The hydroxymethyl group allows for further functionalization or attachment to solid supports, making it valuable in combinatorial chemistry and drug discovery. After serving its role in directing stereochemistry, the auxiliary can be cleaved under mild conditions without racemization, preserving the integrity of the desired chiral center.