Description

4-Methyl-2-Chlorosulfonyl-Benzoic Acid Methyl Ester, 97% is a high-purity, multifunctional organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in the reactive chlorosulfonyl group, which serves as a versatile handle for constructing sulfonamides and other complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to develop novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of advanced herbicides and fungicides that require specific sulfonyl-containing scaffolds.
• Dye and Pigment Manufacturing: Serves as a precursor for creating specialized sulfonated colorants with enhanced properties.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for introducing sulfone groups into polymer backbones, modifying material characteristics.
• Chemical Research & Development: A valuable reagent for exploring new reaction pathways and synthesizing complex organic molecules in R&D laboratories.
• Liquid Crystal and Electronic Material Precursor: Used in the synthesis of specialized organic compounds for advanced material science applications.

Basic Information

Product Name	4-Methyl-2-Chlorosulfonyl-Benzoic Acid Methyl Ester, 97%
CAS No.	1188087-56-0
Molecular Formula	C10H9ClO4S
Molecular Weight	260.69 g/mol
Synonyms	Methyl 4-Methyl-2-(chlorosulfonyl)benzoate; 2-(Chlorosulfonyl)-4-methylbenzoic Acid Methyl Ester; Benzoic acid, 4-methyl-2-(chlorosulfonyl)-, methyl ester; Methyl 2-(chlorosulfonyl)-p-toluate; 4-Methyl-2-chlorosulfonylmethyl benzoate
EINECS	Contact for details

Quality Control

Our 4-Methyl-2-Chlorosulfonyl-Benzoic Acid Methyl Ester is produced under strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC and NMR, to ensure it meets the specified 97% minimum purity and consistent impurity profile. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with each shipment to guarantee traceability and compliance with your research or production standards.

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). This product is hygroscopic (moisture-sensitive) and must be kept under anhydrous conditions. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.