Description

4-(Difluoromethyl)Benzenesulfonyl Chloride CAS NO 1263179-09-4 is a high-purity, specialized organosulfur compound featuring a reactive sulfonyl chloride group and a difluoromethyl substituent. This molecular architecture makes it a critical synthetic intermediate for constructing more complex molecules in advanced chemical synthesis. It is primarily sought after by R&D and production teams in the pharmaceutical and agrochemical industries for developing novel active ingredients.

Application

This versatile sulfonyl chloride is a key building block in several high-value chemical sectors:

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly for creating sulfonamide-based drugs.
• Agrochemical Synthesis: Serves as a precursor for developing new herbicides, fungicides, and insecticides with enhanced properties.
• Material Science: Employed in the research and production of specialty polymers and advanced materials.
• Chemical Research: Acts as a crucial reagent in organic synthesis for introducing the 4-(difluoromethyl)benzenesulfonyl moiety.
• Dye & Pigment Manufacturing: Utilized in the synthesis of specialized dyes and functional colorants.

Basic Information

Product Name	4-(Difluoromethyl)Benzenesulfonyl Chloride
CAS No.	1263179-09-4
Molecular Formula	C7H5ClF2O2S
Molecular Weight	226.63 g/mol
Synonyms	4-(Difluoromethyl)benzenesulfonyl chloride; p-(Difluoromethyl)benzenesulfonyl chloride; α,α-Difluoro-p-toluenesulfonyl chloride; Benzenesulfonyl chloride, 4-(difluoromethyl)-; 1-(Chlorosulfonyl)-4-(difluoromethyl)benzene; 4-(Difluoromethyl)phenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 4-(Difluoromethyl)Benzenesulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided and available upon request to support your quality assurance protocols.

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 and moisture-sensitive nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from strong bases, oxidizers, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder 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.