L-GLUTAMINE (4-13C) is an isotopically labeled, naturally occurring amino acid derivative in which the side-chain carbon at the 4-position is enriched with 13C, while retaining the glutamine backbone with an α-amino group and a carboxyl group. The molecule features a primary amide side chain characteristic of glutamine, and its labeling enables carbon-specific tracking in NMR and mass spectrometric analyses of glutamine-containing metabolites, peptides, or conjugates. As an isotopically labeled substrate and analytical reference, it is used for isotopic tracing, quantitative LC-MS method development, and structural studies where the fate or incorporation of the labeled carbon position in synthetic or biochemical products is monitored.
CAT No: L-Iso-0256
2. Implications of ligand-receptor binding kinetics on GLP-1R signalling
4. Urinary Metabolites Associated with Blood Pressure on a Low-or High-Sodium Die
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