S-Allyl-D-cysteine Sulfoxide is a sulfur-containing, non-proteinogenic cysteine derivative bearing a sulfoxide oxidation state on the side-chain sulfur and an allyl thioether substituent, with the amino acid backbone retaining an amino group and a carboxyl group. The molecule is specified as D at the alpha carbon, and the sulfoxide functional group provides a polar, hydrogen-bond-accepting handle while the allyl substituent maintains a hydrophobic carbon chain for chemical conjugation or reactivity studies. In peptide and chemical biology workflows, this sulfoxide-bearing cysteine analogue is used as a structural probe or building block for preparing modified cysteine-containing peptides and for investigating how sulfur oxidation state and side-chain substitution affect peptide structure, labeling strategies, or analytical behavior.
CAT No: CP02503
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