Description

2,4-Dinitrophenylcysteinyl Disulfide is a specialized biochemical reagent featuring a reactive disulfide bond and a UV-active dinitrophenyl chromophore. This compound matters for researchers and manufacturers requiring precise thiol group modification, protein labeling, or as a key intermediate in peptide synthesis and biochemical studies. It is primarily needed by professionals in pharmaceutical R&D, biotechnology, and academic laboratories focused on proteomics, enzyme studies, and the development of diagnostic assays.

Application

• Bioconjugation & Protein Labeling: Acts as a versatile reagent for the selective modification of cysteine residues in proteins and peptides, facilitating the attachment of probes or tags.
• Biochemical Research: Serves as a critical tool in studying thiol-disulfide exchange reactions, enzyme mechanisms, and redox biology.
• Pharmaceutical Intermediate: Used in the synthesis of more complex molecules targeting various disease pathways, particularly where disulfide bridges are crucial for activity.
• Proteomics & Diagnostics: Employed in the development of assay kits and diagnostic reagents that rely on specific thiol detection or capture.
• Reference Standard: Provides a high-purity standard for analytical method development and quality control in related chemical production.

Basic Information

Product Name	2,4-Dinitrophenylcysteinyl Disulfide
CAS No.	133694-79-8
Molecular Formula	C18H18N4O8S2
Molecular Weight	482.49 g/mol
Synonyms	N-(2,4-Dinitrophenyl)-L-cystine; DNP-Cystine; S-(2,4-Dinitrophenyl)-L-cysteine Disulfide; 2,4-DNP-Cystine; L-Cystine, N-(2,4-dinitrophenyl)-; (R,R)-2,2'-Disulfanediylbis(3-((2,4-dinitrophenyl)amino)propanoic acid); Bis(S-(2,4-dinitrophenyl)cysteine); Dinitrophenylated cystine
EINECS	Contact for details

Quality Control

Our 2,4-Dinitrophenylcysteinyl Disulfide is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a desiccated environment to prevent degradation. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Specific Rotation	Contact for details
Water Content	≤ 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.