Description

Chloromethanesulfonic Acid 4-Methoxyphenyl Ester is a specialized organosulfur compound used as a key synthetic intermediate in advanced chemical manufacturing. Its value lies in its unique sulfonate ester functionality, which is critical for introducing specific structural motifs into target molecules. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those requiring sulfonate ester or aryl methoxy functionalities.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Liquid Crystal & OLED Material Precursor: Serves as a starting material for creating specialized organic compounds used in electronic displays and optoelectronic devices.
• Polymer Modification Agent: Employed to introduce specific functional groups into polymer chains to alter material properties like solubility or reactivity.
• Chemical Research & Development: A valuable reagent for academic and industrial R&D labs exploring new organic reactions and methodologies.
• Dye & Pigment Intermediate: Used in the synthesis of complex colorants and specialty dyes.

Basic Information

Product Name	Chloromethanesulfonic Acid 4-Methoxyphenyl Ester
CAS No.	61980-89-0
Molecular Formula	C8H9ClO4S
Molecular Weight	236.67 g/mol
Synonyms	4-Methoxyphenyl chloromethanesulfonate; p-Methoxyphenyl chloromethanesulfonate; Chloromethylsulfonic Acid 4-Methoxyphenyl Ester; (4-Methoxyphenoxy)sulfonylchloromethane; 61980-89-0; Chloromethanesulfonyl chloride 4-methoxyphenyl ester; 4-Methoxybenzenol chloromethanesulfonate
EINECS	Contact for details

Quality Control

Our Chloromethanesulfonic Acid 4-Methoxyphenyl Ester is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics. Our quality systems are designed to support cGMP requirements for pharmaceutical intermediates and meet the exacting standards of industrial fine chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at controlled room temperature (typically 15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under dry conditions to prevent decomposition. Keep away from incompatible materials such as strong bases and fluorides.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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