Used as a key intermediate in the synthesis of heterocyclic compounds and pharmaceuticals, particularly in the development of cysteine protease inhibitors. Its thiol and amine functional groups allow for selective derivatization in peptide mimetics and bioconjugation applications. Also employed in the preparation of radiolabeled compounds for biochemical assays due to its ability to form stable thioether linkages. Commonly utilized in research settings for modifying biomolecules and creating custom linkers in drug delivery systems.