Description

4-Methoxyphenylphosphonic Acid Diethyl Ester is a high-purity organophosphorus compound that serves as a versatile synthetic intermediate. This product matters for its role in constructing complex molecular architectures, particularly in the development of advanced materials and active pharmaceutical ingredients. It is needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries for applications such as ligand synthesis and catalysis.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced herbicides, pesticides, and plant growth regulators.
• Ligand Precursor: Serves as a starting material for the preparation of specialized phosphonate and phosphine ligands used in homogeneous catalysis.
• Material Science: Intermediate in the synthesis of flame retardants, plasticizers, and other functional polymer additives.
• Cross-Coupling Reactions: Employed in palladium-catalyzed cross-coupling reactions, such as the Hirao reaction, to form carbon-phosphorus bonds.
• Chemical Research: Valuable reagent in academic and industrial R&D for exploring new synthetic methodologies.

Basic Information

Product Name	4-Methoxyphenylphosphonic Acid Diethyl Ester
CAS No.	3762-33-2
Molecular Formula	C11H17O4P
Molecular Weight	244.22 g/mol
Synonyms	Diethyl (4-Methoxyphenyl)phosphonate; Diethyl P-(4-Methoxyphenyl)phosphonate; (4-Methoxyphenyl)phosphonic Acid Diethyl Ester; Phosphonic Acid, P-(4-Methoxyphenyl)-, Diethyl Ester; Diethyl 4-Methoxyphenylphosphonate; 4-Methoxybenzenephosphonic Acid Diethyl Ester; p-Methoxyphenylphosphonic Acid Diethyl Ester; Anisylphosphonic Acid Diethyl Ester
EINECS	223-190-5

Quality Control

Our 4-Methoxyphenylphosphonic Acid Diethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your research and production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. The product is moisture-sensitive; ensure containers are sealed after use to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (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.