Description

5-S-Cysteinyl-3,4-Dihydroxyphenylacetic Acid is a specialized biochemical compound, a cysteinyl conjugate of the dopamine metabolite DOPAC, which plays a significant role in metabolic and neurological research pathways. This compound is valued for its utility as a key reference standard and intermediate in the synthesis of more complex molecules for pharmaceutical and biochemical studies. It is primarily sought by research institutions, pharmaceutical R&D departments, and diagnostic manufacturers focusing on neurochemistry, biomarker discovery, and metabolic pathway analysis.

Application

• Biochemical Research Standard: Used as a high-purity reference material for calibrating analytical instruments like HPLC and LC-MS in neurotransmitter and metabolite studies.
• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of novel compounds targeting neurological disorders.
• Diagnostic Development: Employed in the development and validation of diagnostic assays for detecting specific metabolites related to dopamine metabolism.
• Metabolomics Studies: A key analyte in research investigating metabolic pathways, oxidative stress markers, and biomarker profiling.
• Enzymology Research: Used as a substrate or inhibitor in studies involving catechol-O-methyltransferase (COMT) and other related enzymes.

Basic Information

Product Name	5-S-Cysteinyl-3,4-Dihydroxyphenylacetic Acid
CAS No.	102986-13-0
Molecular Formula	C11H13NO6S
Molecular Weight	287.29 g/mol
Synonyms	5-S-Cysteinyldopac; Cys-DOPAC; 2-(3,4-Dihydroxyphenyl)-5-cysteinylacetic Acid; 5-Cysteinyl-DOPAC; 3,4-Dihydroxyphenylacetic Acid Cysteine Adduct; (2R)-2-Amino-3-[[(2R)-2-[(3,4-dihydroxyphenyl)acetyl]sulfanyl]ethyl]sulfanyl]propanoic Acid (IUPAC); 5-(Cystein-S-yl)-3,4-dihydroxyphenylacetic Acid
EINECS	Contact for details

Quality Control

Our 5-S-Cysteinyl-3,4-Dihydroxyphenylacetic Acid is manufactured under strict quality protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to relevant industry standards for research chemicals, and custom purity grades can be supplied to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) or as indicated on the label. This material is easily oxidized; for long-term storage, consider under an inert atmosphere. Keep the container in a dry, cool, and well-ventilated place.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Area %)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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