L-ASPARAGINE:H2O (1,4-13C2; ALPHA-15N) is an isotopically labeled form of the proteinogenic amino acid L-asparagine present as a hydrate, featuring an amide-bearing side chain (-CH2-CONH2) attached to the α-carbon and containing both an amino group and a carboxyl group. The molecule incorporates 13C labels at the 1 and 4 positions of the asparagine skeleton and an α-15N label on the amino functionality, enabling site-specific isotopic tracking while the hydrate form indicates association with water rather than a protected or esterified derivative. It is employed in NMR and mass spectrometry method development and isotopic tracing workflows for studying peptide and protein structures, reaction pathways involving amide-containing amino acids, and analytical quantification where labeled carbon and nitrogen positions improve signal assignment and interpretation.
CAT No: L-Iso-0103
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