L-METHIONINE (13C5) is an isotopically labeled, naturally occurring amino acid belonging to the thioether-containing, proteinogenic methionine family, in which five carbon atoms are enriched with 13C while the amino acid backbone remains that of methionine. The molecule contains a free α-amino group and a free carboxyl group, and its side chain bears a thioether (methylthio) functionality that can participate in chemical derivatization and redox-sensitive behavior under appropriate conditions. As an isotopic tracer and analytical reference, L-METHIONINE (13C5) is used to support mass spectrometry-based quantification, metabolic or turnover studies using labeled carbon tracking, and the preparation of labeled peptide and amino acid derivatives for structural and chemical biology workflows.
CAT No: L-Iso-0431
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Creative Peptides is a trusted CDMO partner specializing in high-quality peptide synthesis, conjugation, and manufacturing under strict cGMP compliance. With advanced technology platforms and a team of experienced scientists, we deliver tailored peptide solutions to support drug discovery, clinical development, and cosmetic innovation worldwide.
From custom peptide synthesis to complex peptide-drug conjugates, we provide flexible, end-to-end services designed to accelerate timelines and ensure regulatory excellence. Our commitment to quality, reliability, and innovation has made us a preferred partner across the pharmaceutical, biotechnology, and personal care industries.
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