Used as a chiral auxiliary in asymmetric synthesis, particularly in the pharmaceutical industry for the preparation of enantiomerically pure compounds. Its rigid imidazolidinone structure helps control stereochemistry during key bond-forming reactions, such as aldol or alkylation reactions. The trifluoroacetate salt enhances solubility and stability in organic solvents, making it suitable for use in multi-step synthetic routes. Commonly employed in the development of active pharmaceutical ingredients (APIs) where stereochemical precision is critical for biological activity.