Description

3-(Chlorosulfonyl)-4,5-Dimethylbenzoic Acid is a versatile and high-purity chemical intermediate characterized by its reactive chlorosulfonyl and carboxylic acid functional groups. This compound is critical for the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors, where precise structural modifications are required. It is primarily sought after by research institutions and industrial manufacturers engaged in developing active pharmaceutical ingredients (APIs), advanced crop protection agents, and specialty dyes.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly sulfonamide-based therapeutics.
• Agrochemical Synthesis: Used in the production of advanced herbicides and fungicides, leveraging its reactive sites for creating targeted bioactive molecules.
• Dye and Pigment Manufacturing: Serves as a precursor for synthesizing specialized azo dyes and high-performance pigments.
• Polymer Chemistry: Employed in the creation of functional monomers and polymers with specific sulfonic acid or ester groups.
• Chemical Research & Development: A valuable reagent for organic synthesis and process development in academic and industrial R&D laboratories.
• Liquid Crystal & Electronic Materials: Used in the synthesis of intermediates for advanced materials in display and semiconductor applications.

Basic Information

Product Name	3-(Chlorosulfonyl)-4,5-Dimethylbenzoic Acid
CAS No.	151104-64-2
Molecular Formula	C9H9ClO4S
Molecular Weight	248.68 g/mol
Synonyms	4,5-Dimethyl-3-(chlorosulfonyl)benzoic Acid; 3-Chlorosulfonyl-4,5-dimethylbenzoic Acid; Benzoic acid, 3-(chlorosulfonyl)-4,5-dimethyl-; 151104-64-2; 4,5-Dimethyl-3-sulfonylchloride-benzoic acid
EINECS	Contact for details

Quality Control

Every batch of 3-(Chlorosulfonyl)-4,5-Dimethylbenzoic Acid is manufactured and tested under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency meet the high standards required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all test results 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, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under anhydrous conditions. 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%
Water Content (KF)	≤ 0.5%
Melting Point	Contact for details
Heavy Metals	< 10 ppm

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