Description

3-(Chlorosulfonyl)-2-Methylbenzoic Acid Methyl Ester is a versatile and reactive organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in the presence of both a chlorosulfonyl group and a methyl ester, making it a key building block for constructing more complex molecules. This compound is primarily needed by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty chemical industries for the synthesis of active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel drug candidates, particularly those requiring sulfonamide or sulfonate ester functionalities.
• Agrochemical Synthesis: Used in the development of herbicides, fungicides, and insecticides where the chlorosulfonyl group enables the introduction of sulfur-based bioactive moieties.
• Dyestuff and Pigment Manufacturing: Acts as a key intermediate for producing sulfonated dyes and organic pigments with enhanced properties.
• Polymer Modification: Employed to introduce reactive sites into polymer chains for creating specialty polymers with tailored characteristics.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways and creating custom-designed molecules in academic and industrial labs.
• Liquid Crystal and Electronic Material Precursor: Used in the synthesis of advanced materials for display and semiconductor applications.

Basic Information

Product Name	3-(Chlorosulfonyl)-2-Methylbenzoic Acid Methyl Ester
CAS No.	98812-46-5
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	2-Methyl-3-(chlorosulfonyl)benzoic acid methyl ester; Methyl 2-methyl-3-(chlorosulfonyl)benzoate; 3-Chlorosulfonyl-2-methylbenzoic acid methyl ester; Benzoic acid, 3-(chlorosulfonyl)-2-methyl-, methyl ester; Methyl 3-(chlorosulfonyl)-2-methylbenzoate
EINECS	Contact for details

Quality Control

Our 3-(Chlorosulfonyl)-2-Methylbenzoic Acid Methyl Ester is manufactured under strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee it meets your specific research or production requirements.

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 in a dry environment. Keep away from strong acids 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.