Description

Penicillamine Cysteine Disulfide is a stable, oxidized dimer formed from the amino acid cysteine and the drug penicillamine. This compound is of significant interest in biochemical research and pharmaceutical development due to its role in studying thiol-disulfide exchange reactions and metal chelation. It serves as a critical intermediate or reference standard for researchers and manufacturers in the pharmaceutical, biotechnology, and analytical chemistry sectors.

Application

• Pharmaceutical Research & Development: Used as a key intermediate or building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Biochemical Studies: Serves as a model compound for investigating thiol-disulfide redox biochemistry, enzyme mechanisms, and cellular antioxidant pathways.
• Analytical Reference Standard: Employed as a high-purity standard in chromatographic methods (HPLC, LC-MS) for quality control and method validation in pharmaceutical analysis.
• Chelation Chemistry: Utilized in studies related to metal ion binding and the development of chelating agents for therapeutic or diagnostic purposes.
• Nutritional & Cosmetic Science: Investigated for potential applications in formulations where stabilized sulfur-containing compounds are beneficial.

Basic Information

Product Name	Penicillamine Cysteine Disulfide
CAS No.	18840-45-4
Molecular Formula	C10H18N2O4S2
Molecular Weight	294.39 g/mol
Synonyms	L-Cysteine, S-(D-3-mercapto-D-valine) disulfide; (R)-2-Amino-3-(((R)-2-amino-2-carboxyethyl)disulfanyl)-3-methylbutanoic acid; D-Penicillamine-L-cysteine disulfide; Penicillamine-cysteine mixed disulfide; 3,3'-Dithiobis(2-amino-3-methylbutanoic acid) (mixed isomers); β,β'-Dimethylcysteine disulfide (mixed with cysteine); L-Cysteine-D-penicillamine disulfide
EINECS	Contact for details

Quality Control

Our Penicillamine Cysteine Disulfide is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) with detailed chromatographic data (HPLC) are provided to guarantee traceability, consistency, and reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, consider keeping under an inert atmosphere. Keep container tightly sealed in a dry environment to minimize moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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