Description

Benzenesulfonyl Chloride, 4-Bromo-2-Methoxy- is a specialized aromatic sulfonyl chloride derivative, serving as a key synthetic intermediate in advanced organic synthesis. Its value lies in its dual reactive sites—the sulfonyl chloride and the bromo substituent—which enable selective functionalization for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Critical building block for the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of novel herbicides and fungicides, leveraging its halogen and sulfonyl groups for bioactivity.
• 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 of activity-based probes (ABPs) for studying enzyme function and mechanism.
• Dye and Pigment Manufacturing: Acts as a precursor for sulfonated dyes and advanced colorants.
• Custom Synthesis & Contract Manufacturing: A valuable reagent for custom chemical synthesis services targeting niche and high-value products.

Basic Information

Product Name	Benzenesulfonyl Chloride, 4-Bromo-2-Methoxy-
CAS No.	145915-29-3
Molecular Formula	C7H6BrClO3S
Molecular Weight	285.54 g/mol
Synonyms	4-Bromo-2-methoxybenzenesulfonyl chloride; 2-Methoxy-4-bromobenzenesulfonyl chloride; 4-Bromo-2-methoxybenzene-1-sulfonyl chloride; 1-Bromo-3-methoxy-4-(chlorosulfonyl)benzene; p-Bromo-o-methoxybenzenesulfonyl chloride; (4-Bromo-2-methoxyphenyl)sulfonyl chloride
EINECS	Contact for details

Quality Control

Our Benzenesulfonyl Chloride, 4-Bromo-2-Methoxy- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature and reactivity as a strong acid/organic solvent, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent hydrolysis and degradation. Keep away from heat, open flames, and incompatible materials such as bases, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (HPLC Area %)	≥ 99.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 20 ppm

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