Description

[3-(3,4-Dichlorophenyl)Phenyl]Sulfonyl Chloride CAS NO 731779-90-1 is a high-purity, diaryl sulfonyl chloride derivative serving as a critical synthetic intermediate in advanced organic synthesis. Its value lies in its reactive sulfonyl chloride group, which enables the efficient introduction of sulfonamide or sulfonate functionalities into complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries developing novel active ingredients, particularly for creating sulfonamide-based drugs and crop protection agents.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based active pharmaceutical ingredients (APIs), including potential candidates for enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides where the sulfonamide moiety is required for bioactivity.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers, such as polyelectrolytes or sulfonated materials for membranes.
• Chemical Biology & Proteomics: Utilized as a reactive handle for bioconjugation and the development of chemical probes to study protein function and interactions.
• Dye and Pigment Manufacturing: Intermediate in the synthesis of specialized sulfonated dyes and colorants with enhanced properties.
• Custom Synthesis and R&D: A versatile reagent for contract research organizations (CROs) and fine chemical companies engaged in custom synthesis projects for clients.

Basic Information

Product Name	[3-(3,4-Dichlorophenyl)Phenyl]Sulfonyl Chloride
CAS No.	731779-90-1
Molecular Formula	C12H7Cl3O2S
Molecular Weight	321.61 g/mol
Synonyms	3-(3,4-Dichlorophenyl)benzenesulfonyl chloride; 1,2-Dichloro-4-(3-(chlorosulfonyl)phenyl)benzene; (3-(3,4-Dichlorophenyl)phenyl)sulfonyl chloride; 3',4'-Dichlorobiphenyl-3-sulfonyl chloride; Biphenyl-3-sulfonyl chloride, 3',4'-dichloro-; 3-(3,4-Dichlorophenyl)phenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our [3-(3,4-Dichlorophenyl)Phenyl]Sulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent performance as a synthesis intermediate. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and degradation. Keep away from moisture, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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