L-LYSINE:2HCL (D9) is a deuterium-labeled free amino acid salt in which lysine is present as the doubly protonated species associated with two equivalents of hydrochloric acid, and the "D9" designation indicates nine deuterium atoms incorporated into the lysine framework. The molecule contains an amino group and a carboxyl group characteristic of amino acids, along with a side-chain primary amine on the (CH2)4 chain that can form ionic interactions under acidic conditions, while the deuterium labeling provides an isotopic handle for mass-based detection and kinetic studies. L-LYSINE:2HCL (D9) is used in isotopic tracing, quantitative LC-MS or MS/MS method development, and structure-function experiments where lysine's chemical identity and salt form are maintained while isotopic substitution supports analytical discrimination.
CAT No: L-Iso-0408
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