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4,5-Dimethoxy-1,2-benzoquinone

4,5-二甲氧基-1,2-苯并醌

Also known as: 4,5-DIMETHOXY-O-BENZOQUINONE, 4,5-Dimethoxy-3,5-cyclohexadiene-1,2-dione, 4,5-Dimethoxy-o-benzoquinone, 4,5-Dimethoxycyclohexa-3,5-diene-1,2-dione, 3,5-Cyclohexadiene-1,2-dione, 4,5-dimethoxy-, NSC121600

4,5-Dimethoxy-1,2-benzoquinone (CAS 21086-65-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H8O4 and a molecular weight of 168.14700 g/mol. It is also known as 4,5-DIMETHOXY-O-BENZOQUINONE, 4,5-Dimethoxy-3,5-cyclohexadiene-1,2-dione and 4,5-Dimethoxy-o-benzoquinone. Key properties include a melting point of 226-230ºC, a boiling point of 324.3ºC at 760mmHg, a density of 1.24g/cm3 and a flash point of 146.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21086-65-7
Jingsj CID
J-1520005-3
Molecular Formula
C8H8O4
Chinese Name
4,5-二甲氧基-1,2-苯并醌
Molecular Weight
168.14700 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point226-230ºC
Boiling Point324.3ºC at 760mmHg
Density1.24g/cm3
Flash Point146.2ºC

Frequently Asked Questions

What is the CAS number of 4,5-Dimethoxy-1,2-benzoquinone?

The CAS number of 4,5-Dimethoxy-1,2-benzoquinone is 21086-65-7.

What are the molecular formula and molecular weight of 4,5-Dimethoxy-1,2-benzoquinone?

4,5-Dimethoxy-1,2-benzoquinone has molecular formula C8H8O4 and molecular weight 168.14700 g/mol.

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

Last updated:

How to cite: Jingsj. "4,5-Dimethoxy-1,2-benzoquinone (CAS 21086-65-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520005-3 (accessed 2026-10-22).

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