Description

2-Chloro-5-(Methylsulfonyl)Benzenesulfonyl Chloride is a high-purity, versatile sulfonyl chloride derivative used as a critical building block in advanced organic synthesis. Its bifunctional reactive nature makes it an essential intermediate for constructing complex molecules with specific sulfonamide or sulfonate functionalities. This compound is primarily sought after by research and development chemists and process engineers in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used to manufacture advanced herbicides, fungicides, and plant growth regulators requiring specific sulfonyl moiety integration.
• Dyestuff and Pigment Production: Serves as a reactive intermediate for creating sulfonated dyes and specialty pigments with enhanced properties.
• Polymer Chemistry: Employed in the modification of polymers and the synthesis of specialty monomers to introduce sulfonyl groups for improved performance.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process chemistry in developing new synthetic routes and novel compounds.
• Ligand and Catalyst Design: Used to synthesize specialized ligands and organocatalysts for asymmetric synthesis and other catalytic applications.

Basic Information

Product Name	2-Chloro-5-(Methylsulfonyl)Benzenesulfonyl Chloride
CAS No.	90084-62-1
Molecular Formula	C7H6Cl2O4S2
Molecular Weight	289.15 g/mol
Synonyms	2-Chloro-5-(methylsulfonyl)benzenesulfonyl chloride; 2-Chloro-5-methanesulfonylbenzenesulfonyl chloride; 1-Chloro-2-(chlorosulfonyl)-4-(methylsulfonyl)benzene; Benzenesulfonyl chloride, 2-chloro-5-(methylsulfonyl)-; 4-(Methylsulfonyl)-2-chlorobenzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Our 2-Chloro-5-(Methylsulfonyl)Benzenesulfonyl Chloride is manufactured under strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality systems are designed to support cGMP and ISO standards for reliable supply to regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) in its original packaging to prevent degradation from atmospheric moisture. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.