Description

4-Bromo-2-Methylbenzene-1-Sulfonyl Chloride is a versatile and highly reactive organosulfur compound, primarily used as a key sulfonylation reagent and synthetic intermediate. Its value lies in its ability to introduce the sulfonyl functional group into target molecules, enabling the construction of complex chemical architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly in the development of active pharmaceutical ingredients (APIs), crop protection agents, and advanced materials.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of novel herbicides, fungicides, and insecticides where the sulfonyl moiety is a key pharmacophore.
• Chemical Research & Development: Serves as a versatile reagent for introducing sulfonyl groups in organic synthesis and medicinal chemistry projects.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of specialty dyes and functional pigments.
• Polymer Modification: Employed to functionalize polymers and create sulfonated materials with specific properties.
• Ligand and Catalyst Preparation: Useful for synthesizing specialized ligands and catalysts used in asymmetric synthesis and other catalytic processes.

Basic Information

Product Name	4-Bromo-2-Methylbenzene-1-Sulfonyl Chloride
CAS No.	139937-37-4
Molecular Formula	C7H6BrClO2S
Molecular Weight	269.54 g/mol
Synonyms	4-Bromo-2-methylbenzenesulfonyl chloride; 2-Methyl-4-bromobenzenesulfonyl chloride; 4-Bromo-o-toluenesulfonyl chloride; 1-Bromo-4-methyl-3-sulfonylchloridobenzene; p-Bromo-o-toluenesulfonyl chloride; 3-Bromo-4-methylbenzenesulfonyl chloride; 2-Methyl-4-bromophenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 4-Bromo-2-Methylbenzene-1-Sulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee it meets your specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its reactivity as a strong acid/organic solvent derivative, keep away from moisture, bases, and oxidizing agents. Use appropriate corrosion-resistant storage materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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