Used as a key intermediate in organic synthesis, particularly in the preparation of thiol-containing compounds for pharmaceuticals and bioconjugation. Its primary application lies in peptide chemistry, where it serves to introduce protected thiol groups for disulfide bond formation. Commonly employed in the synthesis of cysteine analogs and in solid-phase peptide synthesis due to its stability and selective deprotection properties. Also utilized in the development of radiolabeled compounds for medical imaging and in the production of biologically active molecules requiring free sulfhydryl functionality.