“…TCEP and the DTNB/NTB system have also been used as an analytical tool for the quantification of sulfides, disulfides, hypochlorous acid, hypochlorite ions, iodine, iodate ions, hydrogen peroxide, ascorbic acid, and dehydroascorbic acid. [33][34][35][36][37] Macrocyclic peptide synthesis via thia zip cyclization 38 involving a series of intramolecular rearrangements in a cysteine-rich peptide has been facilitated using TCEP to prevent disulfide formation. TCEP has also been used to facilitate the conjugation of peptides to oligonucleotides by native chemical ligation.…”