Description

Benzenesulfonyl Chloride, 4-Bromo-5-Fluoro-2-Methoxy- is a high-value, multi-functional chemical intermediate featuring a reactive sulfonyl chloride group and halogen substituents. This compound matters for its role as a versatile building block in advanced organic synthesis, enabling the introduction of the benzenesulfonyl moiety into target molecules. It is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in sulfonamide-based therapeutics.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides with enhanced properties.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced materials.
• Chemical Biology Probes: Utilized in the design and synthesis of activity-based probes for studying enzyme function and protein interactions.
• Dye and Pigment Intermediate: Acts as a precursor in the synthesis of complex colorants and functional dyes.
• Custom Synthesis & Contract Manufacturing: A critical reagent for custom synthesis houses serving the life sciences sector.

Basic Information

Product Name	Benzenesulfonyl Chloride, 4-Bromo-5-Fluoro-2-Methoxy-
CAS No.	1443979-74-5
Molecular Formula	C7H5BrClFO3S
Molecular Weight	303.53 g/mol
Synonyms	4-Bromo-5-fluoro-2-methoxybenzenesulfonyl chloride; 2-Methoxy-4-bromo-5-fluorobenzenesulfonyl chloride; 1-Bromo-2-fluoro-5-methoxy-4-sulfonylchloridobenzene; 4-Bromo-5-fluoro-2-methoxybenzene-1-sulfonyl chloride; (4-Bromo-5-fluoro-2-methoxyphenyl)sulfonyl chloride
EINECS	Contact for details

Quality Control

Our Benzenesulfonyl Chloride, 4-Bromo-5-Fluoro-2-Methoxy- is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and development. Each lot is analyzed using advanced techniques including HPLC, NMR, and GC-MS. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (GC)	≥ 96.0%
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.