Primarily used in peptide synthesis, this compound serves as a key reagent for introducing the isoleucine amino acid into peptide chains. Its Boc (tert-butyloxycarbonyl) protecting group ensures selective deprotection during the synthesis process, while the OSU (N-hydroxysuccinimide ester) moiety enhances reactivity, facilitating efficient coupling with other amino acids. This makes it particularly valuable in producing complex peptides for pharmaceutical research, including the development of therapeutic agents and bioactive molecules. Additionally, it is employed in solid-phase peptide synthesis (SPPS) to ensure high yield and purity of the final peptide product. Its stability and ease of handling further contribute to its widespread use in organic and medicinal chemistry laboratories.