Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of antibiotics such as linezolid and other oxazolidinone-class drugs. Its rigid heterocyclic structure with a stereogenic center enables selective interactions in asymmetric synthesis, making it valuable for creating enantiomerically pure compounds. Also employed in peptidomimetic research to stabilize peptide conformations due to its ability to mimic amino acids while resisting degradation.