3-NITRO-L-TYROSINE (RING-13C6) is a stable-isotope-labeled, naturally occurring amino acid derivative in which the aromatic ring of L-tyrosine contains six 13C atoms (ring-13C6) and the side-chain phenol is substituted with a nitro group on the ring. The molecule contains both an amino group and a carboxyl group and retains the tyrosine-type phenolic side-chain functionality, with the nitro-substituted aromatic ring providing an electron-withdrawing handle for spectroscopic differentiation and chemical reactivity studies. As an isotopically labeled aromatic amino acid, it is used in peptide and protein labeling workflows and in analytical method development where ring-specific 13C incorporation supports mass spectrometric or NMR-based tracing of tyrosine-derived fragments and structure-activity studies of nitro-phenolic aromatic residues.
CAT No: L-Iso-0454
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