(S)-Cystathionine-d4

• CAT Number: I044752
• Molecular Formula: C7H10D4N2O4S
• Molecular Weight: 226.29
• Purity: ≥95%
• Synonyms: (2S)-2-amino-4-(2-amino-2-carboxyethyl)sulfanyl-3,3,4,4-tetradeuteriobutanoic acid
• InChI: InChI=1S/C7H14N2O4S/c8-4(6(10)11)1-2-14-3-5(9)7(12)13/h4-5H,1-3,8-9H2,(H,10,11)(H,12,13)/t4-,5?/m0/s1/i1D2,2D2
• InChIKey: ILRYLPWNYFXEMH-AMUFYZDFSA-N
• SMILES: [2H]C([2H])([C@@H](C(=O)O)N)C([2H])([2H])SCC(C(=O)O)N

(S)-Cystathionine-d₄（Cat No.:I044752）is a stable isotope-labeled form of the naturally occurring amino acid (S)-cystathionine, containing four deuterium atoms for enhanced detection in mass spectrometry applications. It serves as a key intermediate in the transsulfuration pathway, linking methionine and cysteine metabolism. This deuterated analog is widely used as an internal standard in metabolic profiling, enzymatic assays, and clinical research on disorders such as homocystinuria and cardiovascular disease. (S)-Cystathionine-d₄ enables accurate quantification of sulfur amino acid flux and supports investigations into redox biology and methylation processes.