L-LEUCINE (13C6; 15N) is an isotopically labeled, naturally occurring amino acid in the leucine class, featuring a branched aliphatic side chain and the standard amino acid backbone with an amino group and a carboxyl group. The molecule bears six 13C atoms distributed across the carbon framework of the side chain and backbone and a 15N label on the amino nitrogen, retaining the L stereochemical form indicated by the product name while presenting a nonpolar, hydrophobic isobutyl side chain that lacks additional functional groups. As a stable isotope tracer, it is used in peptide and protein labeling studies, amino acid incorporation experiments, and analytical method development such as LC-MS or NMR quantification where isotopic enrichment enables sensitive differentiation from unlabeled leucine.
CAT No: L-Iso-0351
1. TMEM16F and dynamins control expansive plasma membrane reservoirs
4. SERS spectrum of the peptide thymosin‐β4 obtained with Ag nanorod substrate
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