This chemical is primarily used in peptide synthesis as a protected form of lysine. The trifluoroacetyl (Tfa) group acts as a protective moiety for the amino group of lysine, preventing unwanted reactions during the peptide chain assembly. It is particularly useful in solid-phase peptide synthesis (SPPS) where selective deprotection is required to build complex peptides. The Z-group (benzyloxycarbonyl) provides additional protection for the alpha-amino group, ensuring controlled and stepwise elongation of the peptide. Its application is critical in the production of peptides for research, pharmaceuticals, and biotechnology, where precise sequence control is essential. After synthesis, the protecting groups can be removed under specific conditions to yield the desired peptide.