Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the preparation of active ingredients that require high enantiomeric purity. Its bromo functional group allows for further transformations via cross-coupling reactions or nucleophilic substitutions, making it valuable in constructing complex organic molecules. Commonly employed in the development of protease inhibitors and other bioactive compounds where stereochemistry plays a critical role in activity. The tert-butyl ester group offers stability during reactions and can be easily removed under mild acidic conditions when needed.