Description

4-Bromo-3-Methoxybenzenesulfonyl Chloride (Saltdata: Free) is a high-purity, versatile sulfonyl chloride derivative used as a key synthetic intermediate in advanced organic synthesis. This compound is critical for constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and functional materials. It is primarily needed by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for introducing the sulfonamide functional group.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and pesticides with tailored activity profiles.
• Material Science: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Biology & Proteomics: Employed as a reactive probe or labeling reagent for studying protein interactions and enzyme activity.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of complex colorants and photoactive compounds.
• Custom Synthesis & Contract Manufacturing: A key reagent for custom synthesis houses serving the pharmaceutical and biotechnology industries.

Basic Information

Item	Details
Product Name	4-Bromo-3-Methoxybenzenesulfonyl Chloride (Saltdata: Free)
CAS No.	1215295-91-2
Molecular Formula	C7H6BrClO3S
Molecular Weight	285.54 g/mol
Synonyms	3-Methoxy-4-bromobenzenesulfonyl chloride; 4-Bromo-3-methoxybenzene-1-sulfonyl chloride; 1-Bromo-2-methoxy-4-(chlorosulfonyl)benzene; 4-Bromo-3-methoxybenzenesulfonylchloride; 4-Bromo-3-methoxy-phenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 4-Bromo-3-Methoxybenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high chemical purity and identity confirmation. Certificates of Analysis (COA) with detailed chromatographic data are provided for every shipment, supporting cGMP and ISO 9001 compliance for traceability and reliability in your critical processes.

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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