L-PROLINE (1-13C; 15N) is an isotopically labeled, proteinogenic amino acid belonging to the cyclic imino acid class, featuring a pyrrolidine ring that links the amino and carboxyl functional groups. The molecule contains a primary amino group and a carboxylic acid, with the side chain forming a secondary amine within the ring; the carbon at the 1-position is enriched in 13C and the nitrogen is enriched in 15N, enabling isotopic discrimination in analytical workflows. L-PROLINE (1-13C; 15N) is used as a labeled substrate or reference material for isotopic tracing, NMR/HRMS-based method development, and quantitative studies of amino acid incorporation or transformation in peptide and protein research contexts.
CAT No: L-Iso-0521
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