Description

L-Cystine S-Oxide is a specialized oxidized derivative of the amino acid cystine, featuring a sulfoxide functional group. This modification is of significant interest in biochemical research and pharmaceutical development, particularly for studying oxidative stress pathways and protein modifications. It serves as a critical intermediate and reference standard for researchers and manufacturers in the life sciences, pharmaceutical, and advanced chemical synthesis sectors.

Application

• Biochemical Research: Used as a key reference standard and reagent in studies of protein oxidation, oxidative stress, and redox biology.
• Pharmaceutical Intermediates: Serves as a building block or precursor in the synthesis of novel drug candidates and bioactive molecules.
• Metabolic Pathway Studies: Employed in research to understand the metabolic fate and biological effects of oxidized sulfur-containing amino acids.
• Analytical Standard: Essential for method development and calibration in analytical techniques like HPLC and mass spectrometry for quantifying oxidized amino acids.
• Cosmeceutical Research: Investigated for potential applications in formulations targeting skin conditions related to oxidative damage.
• Nutritional Science: Used in research models to study the impact of oxidized dietary amino acids on health and metabolism.

Basic Information

Product Name	L-Cystine S-Oxide
CAS No.	2488-84-8
Molecular Formula	C6H12N2O5S2
Molecular Weight	256.30 g/mol
Synonyms	L-Cystine Sulfoxide; (R,R)-Cystine S-Oxide; Cystine Monoxide; 3,3'-Dithiobis(2-aminopropanoic acid) S-Oxide; (2R,2'R)-3,3'-Sulfinylbis(2-aminopropanoic acid); Oxidized L-Cystine; H-Cys(O)-OH
EINECS	219-646-4

Quality Control

Our L-Cystine S-Oxide is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity suitable for research and development. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We can supply material meeting various purity grades, including research and analytical standard grades, upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light should be avoided to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Optical Rotation	Specific range available on COA
Water Content (KF)	≤ 5.0%
Heavy Metals	< 20 ppm
Residue on Ignition	< 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.