Description

Benzoyl Chloride, 3-(Chlorosulfonyl)-4-Methyl- CAS NO 547739-67-3 is a specialized, high-purity chemical intermediate featuring both benzoyl chloride and chlorosulfonyl functional groups. This unique bifunctional structure makes it a critical building block for synthesizing advanced molecules in pharmaceutical and agrochemical research. It is primarily sought after by R&D chemists and process development scientists in the fine chemical industry for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drug candidates and other bioactive molecules.
• Agrochemical Synthesis: Used to construct complex herbicides, fungicides, and insecticides requiring specific sulfonyl chloride chemistry.
• Dyestuff and Pigment Manufacturing: Serves as an intermediate for producing specialized azo dyes and high-performance pigments.
• Polymer Modification: Employed to introduce reactive benzoyl and sulfonyl groups into polymer chains for enhanced properties.
• Chemical Research & Development: A versatile reagent for constructing complex organic frameworks in academic and industrial labs.
• Liquid Crystal and OLED Material Production: Potential building block for advanced electronic and display materials.

Basic Information

Product Name	Benzoyl Chloride, 3-(Chlorosulfonyl)-4-Methyl-
CAS No.	547739-67-3
Molecular Formula	C8H6Cl2O3S
Molecular Weight	253.10 g/mol
Synonyms	4-Methyl-3-(chlorosulfonyl)benzoyl chloride; 3-(Chlorosulfonyl)-4-methylbenzoyl chloride; 2-Methyl-5-(chlorocarbonyl)benzenesulfonyl chloride; Toluene-2-sulfonyl chloride, 4-carbonyl chloride; 4-Methyl-3-sulfonylchloride benzoyl chloride; 3-Chlorosulfonyl-p-toluoyl chloride; 4-(Chlorocarbonyl)-2-methylbenzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Every batch of our Benzoyl Chloride, 3-(Chlorosulfonyl)-4-Methyl- is produced under strict quality management protocols. We guarantee high purity and consistency suitable for demanding synthetic applications. Comprehensive analytical testing, including HPLC, GC, and NMR, is performed to ensure the material meets rigorous specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

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). This compound is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. 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 or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 1.5%
Melting Point	Contact for details

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