L-CYSTEINE-N-T-BOC, S-BENZYL (3-13C) is a protected cysteine derivative in which the amino group is Boc-protected (N- tert-butoxycarbonyl) and the thiol side chain is benzyl-protected (S-benzyl), with a 13C label at the carbon position indicated by "(3-13C)". The molecule retains a free carboxyl group and a stereochemically defined cysteine backbone while bearing a benzyl thioether that masks the side-chain thiol functionality and a Boc carbamate that suppresses undesired amine reactivity during handling and coupling. As an isotopically labeled, chemoselectively protected amino acid intermediate, it is used in peptide synthesis workflows and labeling-oriented studies where controlled protection of the N- and S-functional groups and incorporation of the 13C label into downstream peptide or analytical targets are required.
CAT No: L-Iso-0200
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