Description

Benzenesulfonyl Bromide is a versatile and highly reactive organosulfur compound primarily used as a key sulfonylation reagent in organic synthesis. Its value lies in its ability to introduce the benzenesulfonyl group, a crucial step in constructing complex molecules for pharmaceuticals and advanced materials. This chemical is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for synthesis.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents that incorporate sulfonyl functional groups.
• Polymer Chemistry: Serves as a monomer or modifying agent in the creation of specialty polymers and resins with specific thermal or chemical resistance properties.
• Dye and Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and organic pigments, enhancing solubility and color fastness.
• Chemical Research & Development: A fundamental reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating novel chemical entities.
• Cross-coupling Reactions: Acts as an electrophile in various metal-catalyzed cross-coupling reactions to form carbon-sulfur and carbon-carbon bonds.

Basic Information

Product Name	Benzenesulfonyl Bromide
CAS No.	2297-65-6
Molecular Formula	C6H5BrO2S
Molecular Weight	221.07 g/mol
Synonyms	Benzenesulfonyl bromide; Phenylsulfonyl bromide; Benzene-1-sulfonyl bromide; Benzenesulphonyl bromide; Benzenesulfonic acid bromide; Bromobenzene sulfonate; Sulfonyl bromide benzene derivative
EINECS	218-959-8

Quality Control

Our Benzenesulfonyl Bromide is manufactured under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including assay by titration and impurity profiling, to ensure it meets the high standards required for synthetic applications. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and conformance to agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or crystalline solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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