Used primarily in peptide synthesis, this compound acts as a key reagent for introducing phenylalanine residues into peptide chains. Its tosyl group provides protection for the amino group during the synthesis process, ensuring selective reactions. It is particularly valuable in solid-phase peptide synthesis, where it helps in building complex peptides with high precision. Additionally, it finds application in the preparation of peptide-based pharmaceuticals and bioactive compounds, contributing to the development of drugs targeting various diseases. Its stability and reactivity make it a preferred choice in organic and medicinal chemistry research.