Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its trifluoromethyl and hydroxyl groups enable favorable interactions in drug-receptor binding, enhancing metabolic stability and bioavailability. Commonly employed in asymmetric synthesis to introduce stereochemical control, especially in the preparation of fluorinated analogs of natural products and medicinal agents. The tert-butoxycarbonyl (Boc) group facilitates protection of the amine during peptide coupling and multistep synthesis, allowing selective deprotection under mild acidic conditions.