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

2,6-二甲基-4(3H)-喹唑啉酮

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. It is also known as 4(3H)-Quinazolinone, 2,6-dimethyl-, 2,6-Dimethyl-4(3H)-quinazolinone and 2,6-Dimethylquinazolin-4(1H)-one. 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-1348220-0
Molecular Formula: C₁₀H₁₀N₂O
Chinese Name: 2,6-二甲基-4(3H)-喹唑啉酮
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

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.

Data compiled from public chemical databases 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-1348220-0 (accessed 2026-10-22).

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