L-ASPARTIC ACID (13C4; 15N) is an isotopically labeled, proteinogenic amino acid belonging to the acidic amino acid class, featuring a side chain with a terminal carboxylic acid attached to the alpha-carbon. The molecule contains an alpha-amino group and an alpha-carboxyl group, with the side-chain carboxyl functionality providing an additional acidic handle, while the "L" designation specifies the stereochemical form at the alpha-carbon and the (13C4; 15N) labeling indicates incorporation of four 13C atoms and one 15N atom within the amino acid framework. As a labeled free amino acid, it is used for isotopic tracing, mass spectrometry-based analytical method development, and quantitative studies of amino acid incorporation and exchange in peptide or protein-related workflows where chemical identity and isotopic composition are monitored.
CAT No: L-Iso-0123
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