DL-LEUCINE (15N) is an isotopically labeled, free amino acid in the leucine family, featuring an aliphatic isobutyl side chain and a backbone bearing both an amino group and a carboxyl group. The molecule is supplied as the DL stereochemical mixture and incorporates a 15N label on the amino nitrogen, while retaining the unprotected primary amino functionality and the free carboxylic acid for salt formation, derivatization, or coupling chemistry. DL-LEUCINE (15N) is used in isotopic tracing, quantitative mass spectrometry workflows, and peptide or protein labeling studies where the 15N enrichment enables discrimination of leucine-derived fragments during analytical method development and structural analysis.
CAT No: L-Iso-0354
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