Description

Methyl 3-(Chlorosulfonyl)-4-Methylbenzoate is a high-purity, versatile sulfonyl chloride derivative used as a critical building block in advanced organic synthesis. Its reactive chlorosulfonyl group makes it an essential intermediate for constructing complex molecules with sulfonamide or sulfonate functionalities. This compound is primarily sought by research and development chemists and process engineers in the pharmaceutical and agrochemical industries for creating new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly those containing sulfonamide pharmacophores.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides that require specific sulfonyl-based active ingredients.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Biology Probes: Employed in the creation of activity-based probes and other tools for studying enzyme function and biological pathways.
• Custom Synthesis & Contract Manufacturing: A valuable starting material for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences sector.

Basic Information

Product Name	Methyl 3-(Chlorosulfonyl)-4-Methylbenzoate
CAS No.	372198-41-9
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	3-(Chlorosulfonyl)-4-methylbenzoic acid methyl ester; Methyl 3-chlorosulfonyl-p-toluate; 4-Methyl-3-(chlorosulfonyl)benzoic acid methyl ester; Benzoic acid, 3-(chlorosulfonyl)-4-methyl-, methyl ester; Methyl 4-methyl-3-sulfonylchloride-benzoate
EINECS	Contact for details

Quality Control

Our Methyl 3-(Chlorosulfonyl)-4-Methylbenzoate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%

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