The Dts protecting group is removable by reduction. Reduction of the Dts-protected cysteine can be achieved using a reducing agent like dithiothreitol (DTT) or tris(2-carboxyethyl)phosphine (TCEP). These reducing agents cleave the Dts group, revealing the free thiol group on the cysteine residue.
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1,2,4-Dithiazolidine-4-acetic acid, 3,5-dioxo-a-(phenylmethyl)-, (S)-
(3S,4R)-3-<(R)-1-hydroxyethyl>-4-<(benzyloxycarbonyl)methyl>-2-azetidinone
