2-Methyl-1,4-naphthalenediol

Also known as: Menadiol, Reduced vitamin K3, Dihydrovitamin K3, 2-Methyl-1,4-naphthohydroquinone, 1,4-Dihydroxy-2-methylnaphthalene, Vitamin K3H2, Reduced menadione

2-Methyl-1,4-naphthalenediol (CAS 481-85-6) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C11H10O2 and a molecular weight of 174.19600 g/mol. Key properties include a melting point of 181℃, a boiling point of 391.6ºC at 760mmHg, a density of 1.274g/cm3 and a flash point of 199.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 481-85-6
Jingsj CID: J-9738-1
Molecular Formula: C₁₁H₁₀O₂
Molecular Weight: 174.19600 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	181℃
Boiling Point	391.6ºC at 760mmHg
Density	1.274g/cm3
Flash Point	199.5ºC
Exact Mass	174.06800
PSA	40.46000
LogP	2.55940
Vapor Pressure	1.08E-06mmHg at 25°C
Refractive Index	1.697

Activity & Biological Data

Additional Information	[1]. Zhao Z, et al. Effects of site-directed mutations on heme reduction in Escherichia coli nitrate reductase A by menaquinol: a stopped-flow study. Biochemistry. 2003;42(48):14225-14233. [2]. Taggart WV, et al. Menadiol as an electron donor for reversed oxidative phosphorylation in submitochondrial particles. Biochim Biophys Acta. 1972;267(3):439-443.

Frequently Asked Questions

What is the CAS number of 2-Methyl-1,4-naphthalenediol?

The CAS number of 2-Methyl-1,4-naphthalenediol is 481-85-6.

What are the molecular formula and molecular weight of 2-Methyl-1,4-naphthalenediol?

2-Methyl-1,4-naphthalenediol has molecular formula C11H10O2 and molecular weight 174.19600 g/mol.

What are the upstream and downstream products of 2-Methyl-1,4-naphthalenediol?

For 2-Methyl-1,4-naphthalenediol, Upstream Products: Menadione, 1-acetoxy-1,3-butadiene, p-Toluquinone; Downstream Products: Menadione, 1,4-Dimethoxy-2-naphthoic acid, Vitamin K1.

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-Methyl-1,4-naphthalenediol (CAS 481-85-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9738-1 (accessed 2026-11-09).

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