DL-LYSINE:HCL (3,3,4,4,5,5,6,6-D8) is a deuterium-labeled lysine hydrochloride salt in which the lysine side-chain carbon positions 3 and 4 and the terminal methylene region are enriched with eight deuterium atoms, corresponding to a free amino acid salt form. The molecule contains an α-amino group and an α-carboxyl group along with the ε-amino group on the lysine side chain, with the hydrochloride counterion balancing the basic nitrogens while the "DL" designation indicates a racemic mixture of stereoisomers at the α-carbon. It is employed as an isotopically labeled lysine building block for peptide and protein labeling, quantitative mass spectrometry workflows, and structure-activity or tracer studies where lysine-specific incorporation or analytical discrimination is required.
CAT No: L-Iso-0414
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