Description

Diethyl 4-Methoxybenzylphosphonate is a high-purity organophosphorus compound, specifically a phosphonate ester, serving as a critical building block in advanced organic synthesis. Its primary value lies in its role as a versatile reagent for the Horner-Wadsworth-Emmons (HWE) olefination reaction, enabling the efficient and stereoselective construction of carbon-carbon double bonds. This makes it an essential intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various drug candidates, including those with olefinic linkages, via Horner-Wadsworth-Emmons reactions.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators requiring specific alkene functionalities.
• Liquid Crystal & OLED Material Production: Serves as a building block for creating conjugated organic molecules used in display and lighting technologies.
• Fine Chemical & Flavor/Fragrance Intermediate: Employed in the synthesis of complex aroma chemicals and specialty organic compounds.
• Academic & R&D Laboratories: A valuable reagent for methodological development and the synthesis of novel organic structures in research settings.
• Polymer Chemistry: Can be utilized in the synthesis of functional monomers or phosphorus-containing polymers.

Basic Information

Product Name	Diethyl 4-Methoxybenzylphosphonate
CAS No.	1145-93-3
Molecular Formula	C12H19O4P
Molecular Weight	258.25 g/mol
Synonyms	Diethyl (4-methoxybenzyl)phosphonate; (4-Methoxybenzyl)phosphonic Acid Diethyl Ester; 4-Methoxybenzylphosphonic Acid Diethyl Ester; Diethyl P-(4-Methoxybenzyl)phosphonate; Phosphonic Acid, P-[(4-Methoxyphenyl)methyl]-, Diethyl Ester; Diethyl (p-Methoxybenzyl)phosphonate
EINECS	214-543-6

Quality Control

Our Diethyl 4-Methoxybenzylphosphonate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for synthetic applications. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (typically 15-25°C). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	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.