Description

Sulfonium, Dimethylphenyl- (9Ci) CAS NO 45694-57-3 is a specialized organosulfur compound featuring a positively charged sulfur center, widely recognized as a versatile reagent and intermediate in advanced organic synthesis. Its primary value lies in its ability to act as a potent methylating agent and a precursor for generating sulfur ylides, which are crucial for constructing complex molecular frameworks. This chemical is essential for research and development laboratories, pharmaceutical manufacturers, and agrochemical companies engaged in creating novel active ingredients and fine chemicals.

Application

• As a key methylation reagent in the synthesis of pharmaceuticals and fine chemicals.
• As a precursor for generating sulfur ylides used in Corey-Chaykovsky and other cyclopropanation reactions.
• In the research and development of photoacid generators (PAGs) for advanced photoresist formulations in semiconductor manufacturing.
• As a building block for synthesizing functional materials, including ionic liquids and ligands for catalysis.
• In agrochemical research for the synthesis of novel herbicide and pesticide intermediates.
• As a phase-transfer catalyst in specific organic transformations requiring anion activation.

Basic Information

Item	Details
Product Name	Sulfonium, Dimethylphenyl- (9Ci)
CAS No.	45694-57-3
Molecular Formula	C9H13S+ (typically as a salt, e.g., with Cl-, BF4-, etc.)
Molecular Weight	153.26 g/mol (for cation)
Synonyms	Dimethylphenylsulfonium; Phenyl Dimethyl Sulfonium; Dimethyl(phenyl)sulfanium; (Dimethylsulfonio)benzene; NSC 163844; Phenyl Dimethyl Sulfonium Salt; Dimethylphenylsulfonium Cation; Sulfonium, phenyl dimethyl-
EINECS	Contact for details

Quality Control

Our Sulfonium, Dimethylphenyl- (9Ci) is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets exacting research and industrial-grade specifications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment to guarantee batch-to-batch consistency and traceability.

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.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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