Oxazolidine-4-carboxylic acid hydrochloride is primarily utilized in organic synthesis as a key intermediate for the preparation of various pharmaceuticals and bioactive compounds. Its structure makes it valuable in the development of heterocyclic compounds, which are often explored for their potential therapeutic properties. The compound is also employed in peptide synthesis, where it serves as a building block for modifying peptide structures to enhance their stability or biological activity. Additionally, it finds application in the synthesis of chiral molecules, aiding in the production of enantiomerically pure substances for use in medicinal chemistry. Its hydrochloride form ensures better solubility and handling in various chemical reactions.