DL-HOMOCYSTINE (3,3,3,3,4,4,4,4-D8) is a deuterium-labeled, stereochemically specified as the DL (racemic) form, disulfide-linked amino acid derivative consisting of two homocysteine units connected by a cystine-type S-S bond. The molecule bears two carboxyl groups and two amino groups associated with the homocysteine residues, while the side chains are linked through the oxidized disulfide functionality; the eight deuterium atoms (3,3,3,3,4,4,4,4-D8) are incorporated into the labeled carbon framework of the side chains. In biochemical and analytical research, this isotopically labeled homocystine analogue is used for isotopic tracing and quantitative mass spectrometric or NMR method development, and it serves as a chemically defined precursor for preparing further homocysteine- or cystine-related amino acid and peptide derivatives where isotopic labeling is required.
CAT No: L-Iso-0320
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