Description

3-Bromo-5-Methoxybenzenesulfonyl Chloride is a high-purity sulfonyl chloride derivative, a crucial building block in modern organic synthesis. Its primary value lies in its dual reactive sites, enabling its use as a versatile electrophile for introducing the sulfonamide moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, especially sulfonamide-based therapeutics targeting various diseases.
• Agrochemical Synthesis: Used in creating advanced herbicides, fungicides, and insecticides where the sulfonamide group imparts specific biological activity.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Biology Probes: Employed in the design and synthesis of activity-based probes and molecular tools for studying enzyme function and protein interactions.
• Dye and Pigment Manufacturing: Acts as an intermediate in the production of complex colorants and photographic chemicals.
• Custom Synthesis & Contract Manufacturing: A critical reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the life sciences sector.

Basic Information

Product Name	3-Bromo-5-Methoxybenzenesulfonyl Chloride
CAS No.	1261776-39-9
Molecular Formula	C7H6BrClO3S
Molecular Weight	285.54 g/mol
Synonyms	5-Bromo-3-methoxybenzenesulfonyl chloride; 3-Methoxy-5-bromobenzenesulfonyl chloride; 1-Bromo-3-methoxy-5-(chlorosulfonyl)benzene; Benzenesulfonyl chloride, 3-bromo-5-methoxy-; (3-Bromo-5-methoxyphenyl)sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 3-Bromo-5-Methoxybenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, documenting all critical quality attributes. Our commitment to reliable supply and batch-to-batch consistency meets the stringent requirements of advanced R&D and scale-up production.

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 decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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