Description

(4-Methylsulfanyl-Phenyl)-Phosphonic Acid Diethyl Ester is a specialized organophosphorus compound featuring a phenyl ring substituted with both a phosphonic acid diethyl ester group and a methylthio moiety. This unique structure makes it a valuable building block and key intermediate in advanced organic synthesis, particularly for the development of novel ligands and functional materials. It is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators.
• Ligand Synthesis: Acts as a versatile starting material for creating specialized phosphonate-based ligands for catalysis and metal complexation.
• Material Science: Employed in the research and production of advanced polymers, flame retardants, and surface modification agents.
• Chemical Synthesis: Functions as a critical building block for introducing the phosphonic acid ester functional group into complex organic molecules.

Basic Information

Product Name	(4-Methylsulfanyl-Phenyl)-Phosphonic Acid Diethyl Ester
CAS No.	77918-45-7
Molecular Formula	C11H17O3PS
Molecular Weight	260.28 g/mol
Synonyms	Diethyl (4-(Methylthio)phenyl)phosphonate; Diethyl P-(4-Methylmercaptophenyl)phosphonate; (4-Methylmercaptophenyl)phosphonic Acid Diethyl Ester; Phosphonic Acid, P-[4-(Methylthio)phenyl]-, Diethyl Ester; Diethyl 4-(Methylsulfanyl)phenylphosphonate; 4-(Methylthio)benzenephosphonic Acid Diethyl Ester; (4-Methylsulfanylphenyl)phosphonic Acid Diethyl Ester
EINECS	Contact for details

Quality Control

Our (4-Methylsulfanyl-Phenyl)-Phosphonic Acid Diethyl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, identity confirmation, and impurity profiles to support your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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