Description

2-Chloro-4-(Chlorosulfonyl)Benzoic Acid Methyl Ester is a high-purity, multi-functional chemical intermediate of significant importance in advanced organic synthesis. Its core value lies in the presence of both a reactive chlorosulfonyl group and an ester moiety, making it a versatile building block for constructing complex molecular architectures. This compound is primarily needed by R&D and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries for the development of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and pesticides that require a sulfonyl chloride functional group for activity.
• Dyestuff and Pigment Manufacturing: Serves as a building block for creating sulfonated azo dyes and high-performance organic pigments.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for subsequent cross-linking or to impart specific ionic properties.
• Chemical Research (R&D): A valuable reagent for medicinal chemistry and process chemistry research, enabling the exploration of new synthetic pathways.
• Liquid Crystal and OLED Material Production: Acts as an intermediate in the synthesis of sulfone-containing compounds used in electronic display technologies.

Basic Information

Product Name	2-Chloro-4-(Chlorosulfonyl)Benzoic Acid Methyl Ester
CAS No.	260968-87-4
Molecular Formula	C8H6Cl2O4S
Molecular Weight	269.10 g/mol
Synonyms	Methyl 2-Chloro-4-(chlorosulfonyl)benzoate; Benzoic acid, 2-chloro-4-(chlorosulfonyl)-, methyl ester; 4-(Chlorosulfonyl)-2-chlorobenzoic acid methyl ester; 2-Chloro-4-chlorosulfonylbenzoic acid methyl ester; Methyl 2-chloro-4-chlorosulfonylbenzoate
EINECS	Contact for details

Quality Control

Our 2-Chloro-4-(Chlorosulfonyl)Benzoic Acid Methyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical data 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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