Description

Ethylphosphonic Acid Methyl 4-(Methylsulfonyl)Phenyl Ester is a specialized organophosphorus compound with a sulfonylphenyl ester group, offering unique reactivity and structural properties. This chemical is valued as a key synthetic intermediate and building block in advanced organic synthesis and materials science. It is primarily required by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific enzyme pathways.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and plant growth regulators, leveraging its phosphonate and sulfone functionalities.
• Ligand & Catalyst Synthesis: Acts as a precursor for creating specialized phosphonate-based ligands used in transition metal catalysis and coordination chemistry.
• Material Science Precursor: Employed in the research and development of flame retardants, polymer modifiers, and advanced functional materials.
• Chemical Biology Probe: Utilized in the design of molecular probes and inhibitors for studying biochemical processes involving phosphonate metabolism.
• Custom Synthesis & Contract Manufacturing: A key starting material for custom synthesis projects and fine chemical production on a contract basis.

Basic Information

Product Name	Ethylphosphonic Acid Methyl 4-(Methylsulfonyl)Phenyl Ester
CAS No.	33267-37-7
Molecular Formula	C10H15O5PS
Molecular Weight	278.26 g/mol
Synonyms	Methyl 4-(Methylsulfonyl)phenyl Ethylphosphonate; Ethylphosphonic Acid Methyl Ester of 4-(Methylsulfonyl)phenol; 4-(Methylsulfonyl)phenyl Ethylphosphonate Methyl Ester; [4-(Methanesulfonyl)phenoxy]methyl Ethylphosphonate; Ethylphosphonatesulfone; (4-Methanesulfonylphenoxymethyl)-ethyl-phosphonic Acid Methyl Ester; Phosphonic acid, ethyl-, methyl ester, 4-(methylsulfonyl)phenyl ester
EINECS	Contact for details

Quality Control

Our Ethylphosphonic Acid Methyl 4-(Methylsulfonyl)Phenyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We adhere to cGMP principles where applicable to support our customers in regulated industries.

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). Keep away from heat, sparks, and open flame. The container should be kept tightly sealed in a dry environment to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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