Description

Benzenesulfonyl Chloride, 5-(1,1-Dimethylethyl)-2-Methyl- (9Ci) is a specialized aromatic sulfonyl chloride derivative, valued as a key building block in advanced organic synthesis. Its core value proposition lies in its reactivity as a sulfonylation agent, enabling the introduction of the bulky, sterically hindered 5-tert-butyl-2-methylbenzenesulfonyl moiety. This compound is essential for research chemists and process development scientists in the pharmaceutical and agrochemical industries, where it is used to create novel active ingredients and functional materials with tailored properties.

Application

This sulfonyl chloride is a versatile intermediate with several high-value applications:

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing sulfonamide groups which are common in drug molecules.
• Agrochemical Synthesis: Used in the development of herbicides, fungicides, and insecticides, where the sulfonyl group can contribute to biological activity and selectivity.
• Polymer Chemistry: Acts as a monomer or modifying agent in the production of specialty polymers, including engineering plastics and resins with specific thermal or chemical resistance.
• Dye and Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and organic pigments, where it helps improve solubility and color fastness.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and creating novel chemical entities.
• Ligand and Catalyst Preparation: Used to synthesize specialized ligands for metal complexes and catalysts used in asymmetric synthesis.

Basic Information

Product Name	Benzenesulfonyl Chloride, 5-(1,1-Dimethylethyl)-2-Methyl- (9Ci)
CAS No.	63452-62-0
Molecular Formula	C11H15ClO2S
Molecular Weight	246.75 g/mol
Synonyms	5-tert-Butyl-2-methylbenzenesulfonyl chloride; 2-Methyl-5-tert-butylbenzenesulfonyl chloride; 1-(tert-Butyl)-4-methyl-3-sulfonyl chloride benzene; 5-tert-Butyl-o-toluenesulfonyl chloride; 2-Methyl-5-(1,1-dimethylethyl)benzenesulfonyl chloride; 5-(tert-Butyl)-2-methylbenzene-1-sulfonyl chloride; Benzenesulfonyl chloride, 5-tert-butyl-2-methyl-
EINECS	Contact for details

Quality Control

Our Benzenesulfonyl Chloride, 5-(1,1-Dimethylethyl)-2-Methyl- (9Ci) is produced under strict quality management protocols. We ensure batch-to-batch consistency and high purity through rigorous analytical testing, including chromatography and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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 and reactivity as a strong acid/organic solvent derivative, the container must be kept tightly sealed under dry conditions to prevent hydrolysis and degradation. Keep away from incompatible materials such as strong bases, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 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.