Description

3-Chloro-4-Methoxybenzenesulfonyl Chloride is a versatile and high-purity sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its bifunctional reactivity makes it an indispensable intermediate for constructing complex molecules with tailored properties. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of novel herbicides, fungicides, and plant growth regulators.
• Dyestuff and Pigment Manufacturing: Acts as a sulfonating agent to introduce sulfonyl groups into dye molecules, enhancing solubility and color fastness.
• Polymer Chemistry: Employed as a monomer or cross-linking agent for creating specialty polymers and functional materials.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process development in laboratory-scale and pilot-scale reactions.
• Liquid Crystal & Electronic Materials: Used in the synthesis of intermediates for advanced materials in display and semiconductor technologies.

Basic Information

Product Name	3-Chloro-4-Methoxybenzenesulfonyl Chloride
CAS No.	22952-43-8
Molecular Formula	C7H6Cl2O3S
Molecular Weight	241.09 g/mol
Synonyms	4-Methoxy-3-chlorobenzenesulfonyl chloride; 3-Chloro-4-methoxybenzene-1-sulfonyl chloride; 1-Chloro-2-methoxy-5-(chlorosulfonyl)benzene; 2-Chloro-1-methoxy-4-(chlorosulfonyl)benzene; 3-Chloro-p-anisylsulfonyl chloride; 3-Chloro-4-methoxyphenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 3-Chloro-4-Methoxybenzenesulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR, to ensure it meets the stringent requirements of our global clientele. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed under dry conditions. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	68°C - 72°C
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 0.5%

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