Description

2,3-Dimethylbenzenesulfonyl Chloride is a versatile and reactive organosulfur compound, serving as a key sulfonylation reagent in advanced organic synthesis. Its primary value lies in its ability to introduce the sulfonyl functional group, a critical step in constructing complex molecules with specific biological or material properties. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and pesticides, where the sulfonyl moiety enhances biological activity.
• Dyestuff and Pigment Manufacturing: Acts as a key intermediate in the synthesis of sulfonated dyes and high-performance pigments.
• Polymer Chemistry: Employed to create sulfonated polymers with unique properties for ion-exchange membranes or specialty coatings.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process development in laboratory-scale and pilot-scale syntheses.
• Ligand and Catalyst Preparation: Used to functionalize ligands and complex molecules for catalytic applications.

Basic Information

Product Name	2,3-Dimethylbenzenesulfonyl Chloride
CAS No.	2905-31-9
Molecular Formula	C8H9ClO2S
Molecular Weight	204.67 g/mol
Synonyms	2,3-Dimethylbenzenesulfonyl chloride; 2,3-Xylenesulfonyl chloride; o-Xylene-4-sulfonyl chloride; 2,3-Dimethylphenylsulfonyl chloride; 3,4-Dimethylbenzenesulfonyl chloride; 2,3-DMBSC; 2905-31-9; Benzenesulfonyl chloride, 2,3-dimethyl-
EINECS	220-828-5

Quality Control

Our 2,3-Dimethylbenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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