Description

Benzenemethanesulfonyl Chloride, 3-Methoxy- is a specialized aromatic sulfonyl chloride derivative, serving as a key building block in advanced organic synthesis. Its primary value lies in its reactivity as a sulfonylation reagent, enabling the introduction of the methoxybenzenesulfonyl moiety to create novel compounds with tailored properties. This intermediate is essential for researchers and process chemists in the pharmaceutical, agrochemical, and material science industries, particularly for developing active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Critical for the synthesis of active pharmaceutical ingredients (APIs), especially in creating sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides requiring specific sulfonyl group chemistry.
• Polymer Chemistry: Acts as a monomer or modifying agent in the production of specialty polymers and resins.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D for exploring new synthetic pathways and creating compound libraries.
• Dye and Pigment Manufacturing: Employed in the synthesis of specialized dyes and pigments where sulfonyl groups enhance properties like solubility or color fastness.
• Ligand and Catalyst Preparation: Useful for synthesizing complex ligands and organometallic catalysts used in asymmetric synthesis.

Basic Information

Item	Details
Product Name	Benzenemethanesulfonyl Chloride, 3-Methoxy-
CAS No.	163295-76-9
Molecular Formula	C8H9ClO3S
Molecular Weight	220.67 g/mol
Synonyms	3-Methoxybenzenemethanesulfonyl Chloride; (3-Methoxyphenyl)methanesulfonyl Chloride; α-Toluenesulfonyl Chloride, 3-Methoxy-; m-Methoxybenzylsulfonyl Chloride; 3-Methoxybenzylsulfonyl Chloride; 1-(Chlorosulfonylmethyl)-3-methoxybenzene; 3-Methoxybenzyl Chlorosulfonate
EINECS	Contact for details

Quality Control

Our Benzenemethanesulfonyl Chloride, 3-Methoxy- is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (typically 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 by atmospheric moisture.

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.