Description

Methyl 2-(Chlorosulfonyl)-5-Methylbenzoate is a high-purity, specialized organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in its dual functional groups—the chlorosulfonyl and methyl ester moieties—which make it a versatile building block for constructing complex molecular architectures. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of sulfonamide-based drug candidates, including potential enzyme inhibitors and receptor modulators.
• Agrochemical Synthesis: Used in the development of new herbicides and fungicides, leveraging the sulfonyl chloride group for creating bioactive sulfonamide or sulfonate esters.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialized polymers with unique thermal or chemical resistance properties.
• Dye and Pigment Manufacturing: Employed in the synthesis of complex organic colorants and photoactive compounds.
• Custom Synthesis and Contract Manufacturing: A critical raw material for CROs and CDMOs producing bespoke compounds for client research programs.

Basic Information

Product Name	Methyl 2-(Chlorosulfonyl)-5-Methylbenzoate
CAS No.	1153230-09-1
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	5-Methyl-2-(chlorosulfonyl)benzoic acid methyl ester; Methyl 5-methyl-2-(chlorosulfonyl)benzoate; Benzoic acid, 2-(chlorosulfonyl)-5-methyl-, methyl ester; 2-(Chlorosulfonyl)-5-methylbenzoic acid methyl ester
EINECS	Contact for details

Quality Control

Our Methyl 2-(Chlorosulfonyl)-5-Methylbenzoate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as identity, assay, and impurity profile. We adhere to cGMP guidelines where applicable, and our quality protocols are designed to meet the stringent requirements of pharmaceutical and advanced chemical 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) after opening 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
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.