Description

n-2,4-Dnp-L-Cysteic Acid Sodium is a chemically modified derivative of the amino acid cysteine, specifically designed for advanced biochemical research and analysis. This compound is valued for its role as a stable, water-soluble derivative, crucial for precise analytical procedures. It is primarily utilized by researchers and quality control laboratories in the pharmaceutical, biotechnology, and life science sectors for protein sequencing, amino acid analysis, and as a reference standard.

Application

• Protein Sequencing & Analysis: Used as a derivative in Edman degradation and other sequencing methods to identify and quantify cysteine residues.
• Amino Acid Reference Standard: Serves as a high-purity calibrant in chromatographic systems (HPLC, LC-MS) for accurate amino acid profiling.
• Biochemical Research: Employed in studies of protein structure, function, and post-translational modifications involving cysteine.
• Pharmaceutical QC: Acts as a critical reagent in the quality control of peptide-based drugs and biologics.
• Diagnostic Reagent Manufacturing: Used in the formulation of kits and reagents for clinical diagnostics.
• Food & Nutraceutical Analysis: Applied in the analysis of protein hydrolysates and nutritional supplements.

Basic Information

Product Name	n-2,4-Dnp-L-Cysteic Acid Sodium
CAS No.	16068-14-7
Molecular Formula	C9H8N4O8SNa
Molecular Weight	363.24 g/mol
Synonyms	L-Cysteic Acid 2,4-Dinitrophenyl Derivative Sodium Salt; S-(2,4-Dinitrophenyl)-L-cysteic Acid Sodium Salt; DNP-Cysteic Acid Sodium Salt; N-2,4-Dinitrophenyl-L-cysteic Acid Sodium Salt; 2,4-DNP-L-Cysteic Acid Na; (R)-2-Amino-3-((2,4-dinitrophenyl)thio)propanoic Acid Sodium Salt; Sodium (2R)-2-amino-3-[(2,4-dinitrophenyl)sulfanyl]propanoate
EINECS	Contact for details

Quality Control

Our n-2,4-Dnp-L-Cysteic Acid Sodium is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and tests for residual solvents and heavy metals. A Certificate of Analysis (COA) detailing all specifications is provided to ensure traceability and compliance with your research or production standards.

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 product is hygroscopic (moisture-sensitive) and must be kept in a desiccated environment to maintain stability and purity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines
Specific Rotation	Contact for details

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