2,6-Dimethylquinazolin-4(3H)-one

Also known as: 4(3H)-Quinazolinone, 2,6-dimethyl-, 2,6-Dimethyl-4(3H)-quinazolinone, 2,6-Dimethylquinazolin-4(1H)-one, 2,6-Dimethyl-1H-quinazolin-4-one, 2,6-Dimethyl-3,4-dihydroquinazolin-4-one, 2,6-dimethyl-3H-quinazolin-4-one, 3,4-dihydro-2,6-dimethyl-4-oxoquinazoline, Raltitrexed Impurity 2

2,6-Dimethylquinazolin-4(3H)-one (CAS 18731-19-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O and a molecular weight of 174.19900 g/mol. Key properties include a boiling point of 336.6ºC at 760 mmHg, a density of 1.23 g/cm3 and a flash point of 157.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18731-19-6
Jingsj CID: J-1348220-7
Molecular Formula: C₁₀H₁₀N₂O
Molecular Weight: 174.19900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	336.6ºC at 760 mmHg
Density	1.23 g/cm3
Flash Point	157.4ºC
Exact Mass	174.07900
PSA	46.01000
LogP	1.95220

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2,6-Dimethylquinazolin-4(3H)-one?

The CAS number of 2,6-Dimethylquinazolin-4(3H)-one is 18731-19-6.

What are the molecular formula and molecular weight of 2,6-Dimethylquinazolin-4(3H)-one?

2,6-Dimethylquinazolin-4(3H)-one has molecular formula C10H10N2O and molecular weight 174.19900 g/mol.

What are the upstream and downstream products of 2,6-Dimethylquinazolin-4(3H)-one?

For 2,6-Dimethylquinazolin-4(3H)-one, Upstream Products: 2,6-dimethyl-4H-3,1-benzoxazin-4-one, 2-Iodo-5-methylbenzoic acid, Acetamidine hydrochloride; Downstream Products: 6-(Bromomethyl)-2-methyl-4(3H)-quinazolinone.

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. "2,6-Dimethylquinazolin-4(3H)-one (CAS 18731-19-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1348220-7 (accessed 2026-11-09).

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