Description

Methyl 2-(Chlorosulfonyl)Benzoate is a versatile and reactive organic sulfonyl chloride derivative, serving as a critical building block in advanced chemical synthesis. Its value lies in its dual functionality, combining an ester group with a highly reactive chlorosulfonyl moiety, enabling precise molecular construction. This compound is essential for research chemists and manufacturers in the pharmaceutical and agrochemical industries, where it is used to create sulfonamides and other complex intermediates for active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based active pharmaceutical ingredients (APIs) for various therapeutic areas.
• Agrochemical Synthesis: Building block for developing novel herbicides, fungicides, and insecticides with sulfonylurea or sulfonamide backbones.
• Dyestuff and Pigment Production: Used in the manufacture of specialty dyes and organic pigments, leveraging the sulfonyl chloride group for chromophore attachment.
• Polymer Modification: Serves as a functional monomer or cross-linking agent to introduce sulfonyl groups into polymer chains, altering material properties.
• Chemical Research & Development: A valuable reagent in organic synthesis labs for constructing complex molecules and exploring new reaction pathways.
• Liquid Crystal & Electronic Materials: Intermediate in the production of sulfone-containing compounds used in advanced material science applications.

Basic Information

Item	Detail
Product Name	Methyl 2-(Chlorosulfonyl)Benzoate
CAS No.	26638-43-7
Molecular Formula	C8H7ClO4S
Molecular Weight	234.66 g/mol
Synonyms	2-(Chlorosulfonyl)benzoic acid methyl ester; Methyl o-(chlorosulfonyl)benzoate; Benzoic acid, 2-(chlorosulfonyl)-, methyl ester; Methyl 2-chlorosulfonylbenzoate; o-(Methoxycarbonyl)benzenesulfonyl chloride; 2-Methoxycarbonylbenzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Our Methyl 2-(Chlorosulfonyl)Benzoate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and consistency for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under dry conditions to prevent decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as 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)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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