Description

4-Chloro-2-(Chlorosulfonyl) Benzoic Acid Methyl Ester is a high-purity, multi-functional chemical intermediate essential for advanced organic synthesis. Its reactive chlorosulfonyl and ester groups make it a versatile building block for constructing complex molecular architectures. This compound is primarily sought by R&D and production chemists in the pharmaceutical and agrochemical industries for the development of active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based active pharmaceutical ingredients (APIs) and other drug candidates.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, leveraging its reactive sites for creating novel bioactive molecules.
• Dye and Pigment Manufacturing: Serves as a building block for synthesizing complex organic dyes, pigments, and optical brighteners.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers with specific functional properties.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways and creating custom-designed compounds in laboratory settings.
• Liquid Crystal and OLED Material Production: Used in the synthesis of advanced organic electronic materials.

Basic Information

Product Name	4-Chloro-2-(Chlorosulfonyl) Benzoic Acid Methyl Ester
CAS No.	85392-01-4
Molecular Formula	C8H6Cl2O4S
Molecular Weight	269.10 g/mol
Synonyms	Methyl 4-Chloro-2-(chlorosulfonyl)benzoate; Benzoic acid, 4-chloro-2-(chlorosulfonyl)-, methyl ester; 2-(Chlorosulfonyl)-4-chlorobenzoic acid methyl ester; Methyl 4-chloro-2-chlorosulfonylbenzoate; 4-Chloro-2-chlorosulfonylbenzoic acid methyl ester; NSC 403119
EINECS	Contact for details

Quality Control

Every batch of 4-Chloro-2-(Chlorosulfonyl) Benzoic Acid Methyl Ester is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards through rigorous analytical controls, including HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed to exclude moisture and stored away from direct light sources to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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