Description

Benzoyl Chloride, 4-(Dimethylsilyl)- (9Ci) CAS NO 121398-92-3 is a specialized organosilicon derivative of benzoyl chloride, featuring a reactive acid chloride group and a dimethylsilyl substituent. This unique bifunctional structure makes it a valuable high-purity synthetic intermediate for constructing complex molecular architectures in advanced materials and pharmaceutical research. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty polymer industries for introducing both benzoyl and silyl functionalities.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing novel active pharmaceutical ingredients (APIs) and drug candidates, particularly those requiring silicon incorporation for metabolic stability.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides where the silyl group can modify bioavailability and environmental persistence.
• Specialty Polymer & Material Science: Serves as a monomer or cross-linking agent for developing silicon-containing polymers, resins, and advanced coatings with tailored thermal and surface properties.
• Surface Modification Agent: Employed to functionalize silica, glass, or other inorganic surfaces via the reactive acid chloride group, creating hydrophobic or specific ligand-attachment sites.
• Organic Synthesis Reagent: A versatile reagent in academic and industrial laboratories for Friedel-Crafts acylation and nucleophilic substitution reactions to introduce the 4-(dimethylsilyl)benzoyl moiety.
• Liquid Crystal & OLED Material Precursor: Used in the synthesis of organosilicon compounds for electronic applications, including liquid crystal displays and organic light-emitting diodes (OLEDs).

Basic Information

Product Name	Benzoyl Chloride, 4-(Dimethylsilyl)- (9Ci)
CAS No.	121398-92-3
Molecular Formula	C9H11ClOSi
Molecular Weight	198.72 g/mol
Synonyms	4-(Dimethylsilyl)benzoyl chloride; (4-Chlorocarbonylphenyl)dimethylsilane; p-(Dimethylsilyl)benzoyl chloride; Dimethyl(4-(chlorocarbonyl)phenyl)silane; Benzoyl chloride, p-(dimethylsilyl)-; 121398-92-3; 4-(Dimethylsilaneyl)benzoyl chloride
EINECS	Contact for details

Quality Control

Our Benzoyl Chloride, 4-(Dimethylsilyl)- is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical parameters. Our quality system supports compliance with cGMP and ISO 9001 standards for research and commercial-scale applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. 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 hydrolysis. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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