This chemical is primarily utilized in the synthesis of peptides and peptidomimetics, where it serves as a building block for introducing specific amino acid structures into larger molecules. Its tert-butoxycarbonyl (Boc) protecting group ensures selective reactivity during peptide coupling reactions, while the ethylthio moiety can be leveraged for further functionalization or as a precursor for more complex sulfur-containing compounds. It is particularly valuable in medicinal chemistry for designing drug candidates targeting enzymes or receptors that interact with sulfur-based functional groups. Additionally, it finds use in research settings for studying the role of thioether linkages in protein structure and function.