Description

(3-Methylbenzyl)Phosphonic Acid Diethyl Ester CAS NO 63909-50-2 is a high-purity organophosphorus compound, specifically a phosphonic acid diester derivative, valued for its role as a versatile synthetic intermediate and ligand precursor. Its chemical structure makes it a critical building block in the development of advanced materials and specialty chemicals. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries seeking to develop new active ingredients or functional additives.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds targeting specific enzyme pathways.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators where the phosphonate moiety is required for activity.
• Ligand and Catalyst Preparation: Serves as a precursor for phosphonate-based ligands used in homogeneous catalysis and metal-organic frameworks (MOFs).
• Flame Retardant Additive: Incorporated as a reactive intermediate in the production of phosphorus-containing flame retardants for polymers and textiles.
• Material Science Research: Employed in the development of specialty polymers, surface modifiers, and corrosion inhibitors.
• Chemical Synthesis: Utilized in Horner-Wadsworth-Emmons (HWE) olefination reactions and other carbon-carbon bond forming processes in fine chemical manufacturing.

Basic Information

Product Name	(3-Methylbenzyl)Phosphonic Acid Diethyl Ester
CAS No.	63909-50-2
Molecular Formula	C12H19O3P
Molecular Weight	242.25 g/mol
Synonyms	Diethyl (3-Methylbenzyl)phosphonate; Diethyl (m-Tolylmethyl)phosphonate; (3-Methylphenyl)methylphosphonic Acid Diethyl Ester; Phosphonic Acid, P-[(3-Methylphenyl)methyl]-, Diethyl Ester; m-Tolylmethylphosphonic Acid Diethyl Ester; Diethyl m-Tolylmethylphosphonate; Diethyl (3-Methylbenzyl)phosphonite (common misnomer); m-Xylylphosphonic Acid Diethyl Ester
EINECS	Contact for details

Quality Control

Our (3-Methylbenzyl)Phosphonic Acid Diethyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications 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 room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.