Description

Methylthiophosphonic Acid o-Ethyl o-[p-(Ethylsulfonyl)Phenyl] Ester is a specialized organophosphorus compound with a thiophosphonate ester structure. This chemical is valued for its role as a key synthetic intermediate in the development of advanced agrochemicals and pharmaceuticals. It is primarily needed by research and development chemists, process development scientists, and manufacturers in the agrochemical and fine chemical synthesis sectors for creating novel active ingredients and functional molecules.

Application

• Agrochemical Intermediate: A critical building block in the synthesis of novel insecticides, acaricides, and herbicides, leveraging its thiophosphonate moiety.
• Pharmaceutical Research: Used as a precursor in medicinal chemistry for developing potential drug candidates, particularly those targeting enzyme inhibition.
• Chemical Synthesis: Serves as a versatile intermediate in organic synthesis for introducing the ethylsulfonylphenyl and thiophosphonate functional groups into more complex architectures.
• Ligand and Catalyst Development: Investigated for use in creating specialized ligands for metal catalysis due to its phosphorus and sulfur donor atoms.
• Material Science Research: Explored in the development of functionalized polymers or additives with specific chemical properties.

Basic Information

Product Name	Methylthiophosphonic Acid o-Ethyl o-[p-(Ethylsulfonyl)Phenyl] Ester
CAS No.	3309-71-5
Molecular Formula	C11H17O4PS2
Molecular Weight	308.35 g/mol
Synonyms	O-Ethyl O-[4-(Ethylsulfonyl)phenyl] Methylphosphonothioate; Phosphonothioic Acid, Methyl-, O-Ethyl O-[4-(Ethylsulfonyl)phenyl] Ester; Ethyl 4-(Ethylsulfonyl)phenyl Methylphosphonothioate; NSC 167088; Methylthiophosphonic Acid O-Ethyl O-(4-(Ethylsulfonyl)Phenyl) Ester
EINECS	Contact for details

Quality Control

Our production of Methylthiophosphonic Acid o-Ethyl o-[p-(Ethylsulfonyl)Phenyl] Ester adheres to stringent internal quality protocols to ensure batch-to-batch consistency and purity. Every lot is characterized using advanced analytical techniques including HPLC, GC, NMR, and IR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This compound is easily oxidized (store under inert atmosphere) and sensitive to strong alkali/organic solvent. Keep away from heat, sparks, and open flame. For long-term storage, consider maintaining under an inert gas atmosphere such as nitrogen or argon.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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