Description

Methyl 4-(Chlorosulfonyl)-3-Methylbenzoate is a high-value, multi-functional chemical intermediate characterized by its reactive chlorosulfonyl and ester functional groups. This compound is essential for the synthesis of complex molecules, offering a versatile building block for introducing specific sulfonamide or sulfonate moieties into target structures. It is primarily utilized by research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides that require a specific sulfonyl moiety for bioactivity.
• Material Science Research: Serves as a precursor for creating functional polymers, dyes, and liquid crystals with tailored properties.
• Chemical Research & Development: A versatile reagent for organic synthesis, enabling the introduction of the 4-(chlorosulfonyl)-3-methylbenzoate group into complex molecular frameworks.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific target molecules.

Basic Information

Product Name	Methyl 4-(Chlorosulfonyl)-3-Methylbenzoate
CAS No.	260968-81-8
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	3-Methyl-4-(chlorosulfonyl)benzoic acid methyl ester; Methyl 3-methyl-4-sulfonylchloridebenzoate; 4-(Chlorosulfonyl)-3-methyl-benzoic acid methyl ester; Benzoic acid, 4-(chlorosulfonyl)-3-methyl-, methyl ester; Methyl 4-chlorosulfonyl-3-methylbenzoate
EINECS	Contact for details

Quality Control

Our production of Methyl 4-(Chlorosulfonyl)-3-Methylbenzoate adheres to stringent in-process controls and final product testing to ensure batch-to-batch consistency and high purity. Quality is verified against established internal specifications using advanced analytical techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

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%
Loss on Drying	≤ 0.5%

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