Used in peptide synthesis as a protected amino acid to introduce 3,4-difluoro-L-phenylalanine into peptide chains. The tert-butoxycarbonyl (Boc) group acts as a protective group for the amine, ensuring selective reactions during peptide assembly. This compound is particularly valuable in medicinal chemistry for developing fluorinated peptides, which often exhibit enhanced stability, bioavailability, and binding affinity. It is also employed in the synthesis of bioactive molecules and pharmaceutical intermediates, where the fluorine atoms can modulate biological activity and improve metabolic resistance. Additionally, it serves as a building block in organic synthesis for creating complex molecules with specific stereochemistry and functional properties.