2,3-Dimethoxy-5-methyl-1,4-benzenediol

Also known as: 1,4-Benzenediol, 2,3-dimethoxy-5-methyl-, 1,4-Dihydroxy-2,3-dimethoxy-5-methylbenzene, 2,3-Dimethoxy-5-methyl-1,4-hydroquinone, 2,3-Dimethoxy-5-methylbenzene-1,4-diol, MFCD00017161, Ubiquinol 0, Ubiquinol Q0

2,3-Dimethoxy-5-methyl-1,4-benzenediol (CAS 3066-90-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C9H12O4 and a molecular weight of 184.189 g/mol. Key properties include a melting point of 74.5-75.5°C (lit.), a boiling point of 340.3±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 159.6±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3066-90-8
Jingsj CID: J-1497464-2
Molecular Formula: C₉H₁₂O₄
Molecular Weight: 184.189 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	74.5-75.5°C (lit.)
Boiling Point	340.3±37.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	159.6±26.5 °C
Exact Mass	184.073563
PSA	58.92000
LogP	0.66
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.553

Customs & Trade Information

HS Code	2909499000
Summary	2909499000. ether-alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2,3-Dimethoxy-5-methyl-1,4-benzenediol?

The CAS number of 2,3-Dimethoxy-5-methyl-1,4-benzenediol is 3066-90-8.

What are the molecular formula and molecular weight of 2,3-Dimethoxy-5-methyl-1,4-benzenediol?

2,3-Dimethoxy-5-methyl-1,4-benzenediol has molecular formula C9H12O4 and molecular weight 184.189 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2,3-Dimethoxy-5-methyl-1,4-benzenediol (CAS 3066-90-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497464-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.