Description

5-Bromo-3-Methylbenzo[B]Thiophene-2-Sulphonyl Chloride is a high-purity, specialized organic intermediate of significant importance in advanced chemical synthesis. Its core value lies in its role as a versatile sulfonyl chloride building block, enabling the introduction of the sulfonamide or sulfonate functional group into complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of potential drug candidates, especially those targeting various enzyme families where sulfonamide groups are pharmacologically active.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the bioactivity of the benzothiophene sulfonamide scaffold.
• Material Science Research: Serves as a monomer or functionalization agent in the creation of specialized polymers and organic electronic materials.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying biological pathways and protein functions.
• Custom Synthesis & Contract Manufacturing: A critical raw material for fine chemical and CDMO (Contract Development and Manufacturing Organization) companies producing bespoke compounds for clients.

Basic Information

Product Name	5-Bromo-3-Methylbenzo[B]Thiophene-2-Sulphonyl Chloride
CAS No.	338797-11-8
Molecular Formula	C10H6BrClO2S2
Molecular Weight	337.64 g/mol
Synonyms	5-Bromo-3-methylbenzo[b]thiophene-2-sulfonyl chloride; 5-Bromo-3-methyl-1-benzothiophene-2-sulfonyl chloride; 5-Bromo-3-methyl-2-benzothiophenesulfonyl chloride; 2-Benzothiophenesulfonyl chloride, 5-bromo-3-methyl-; 338797-11-8; 5-Br-3-Me-BT-SO2Cl
EINECS	Contact for details

Quality Control

Our 5-Bromo-3-Methylbenzo[B]Thiophene-2-Sulphonyl Chloride is manufactured under strict quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality systems are designed to support cGMP and ISO standards for reliable supply to regulated industries.

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 compound is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from strong bases and oxidizing agents.

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%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%

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