diethyl (3,4-dimethoxybenzyl)phosphonate

(3,4-二甲氧基苄基)-磷酸二乙酯

Also known as: (3,4-DIMETHOXY-BENZYL)-PHOSPHONIC ACID DIETHYL ESTER, 4-(diethoxyphosphorylmethyl)-1,2-dimethoxybenzene, DIETHYL (3,4-DIMETHOXYPHENYL)METHYLPHOSPHONATE, Diethyl P-[(3,4-dimethoxyphenyl)methyl]phosphonate, Phosphonic acid, P-[(3,4-dimethoxyphenyl)methyl]-, diethyl ester, diethyl 3,4-diMethoxybenzylphosphonate

diethyl (3,4-dimethoxybenzyl)phosphonate (CAS 78055-65-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H21O5P and a molecular weight of 288.27700 g/mol. It is also known as (3,4-DIMETHOXY-BENZYL)-PHOSPHONIC ACID DIETHYL ESTER, 4-(diethoxyphosphorylmethyl)-1,2-dimethoxybenzene and DIETHYL (3,4-DIMETHOXYPHENYL)METHYLPHOSPHONATE. Key properties include a boiling point of 389.1ºC at 760 mmHg, a density of 1.123g/cm3 and a flash point of 202.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
78055-65-9
Jingsj CID
J-1086505-5
Molecular Formula
C13H21O5P
Chinese Name
(3,4-二甲氧基苄基)-磷酸二乙酯
Molecular Weight
288.27700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point389.1ºC at 760 mmHg
Density1.123g/cm3
Flash Point202.7ºC

Frequently Asked Questions

What is the CAS number of diethyl (3,4-dimethoxybenzyl)phosphonate?

The CAS number of diethyl (3,4-dimethoxybenzyl)phosphonate is 78055-65-9.

What are the molecular formula and molecular weight of diethyl (3,4-dimethoxybenzyl)phosphonate?

diethyl (3,4-dimethoxybenzyl)phosphonate has molecular formula C13H21O5P and molecular weight 288.27700 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "diethyl (3,4-dimethoxybenzyl)phosphonate (CAS 78055-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1086505-5 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.