Description

4-S-Cysteinylcatechol is a specialized biochemical compound featuring a catechol moiety linked to the amino acid cysteine via a thioether bond. This unique structure makes it a valuable intermediate and research tool in the study of melanogenesis, neuromelanin formation, and oxidative stress pathways. It is primarily utilized by researchers and manufacturers in the pharmaceutical, cosmetic, and life science sectors for developing analytical methods and investigating pigment-related biochemistry.

Application

• Biochemical Research: Critical intermediate in studies of melanin biosynthesis and neuromelanin formation in the brain.
• Pharmaceutical Development: Used as a reference standard and precursor in research targeting Parkinson's disease and related neurodegenerative disorders.
• Cosmetic Science: Employed in research to understand skin pigmentation mechanisms and to develop agents for hyperpigmentation or depigmentation treatments.
• Enzymology Studies: Serves as a substrate or inhibitor for enzymes like tyrosinase and catechol-O-methyltransferase (COMT).
• Analytical Chemistry: Used as a high-purity standard for HPLC, LC-MS, and other analytical techniques in quality control and method development.
• Oxidative Stress Research: Investigated for its role in redox cycling and the generation of reactive oxygen species within biological systems.

Basic Information

Product Name	4-S-Cysteinylcatechol
CAS No.	77504-33-7
Molecular Formula	C9H11NO3S
Molecular Weight	213.25 g/mol
Synonyms	4-S-Cysteinyldopa; 2,3-Dihydroxybenzylcysteine; 5-S-Cysteinyl-1,2-dihydroxybenzene; Cysteinylcatechol; 4-(2-Amino-2-carboxyethylthio)-1,2-benzenediol; L-Cysteinylcatechol; 4-S-CD
EINECS	Contact for details

Quality Control

Our 4-S-Cysteinylcatechol is produced under stringent conditions to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Each lot undergoes comprehensive analytical testing including HPLC for purity, NMR and MS for structural confirmation, and tests for residual solvents and heavy metals. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your research and development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below under an inert atmosphere (e.g., argon or nitrogen) to minimize oxidation and degradation. For long-term stability, keep the material desiccated. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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