5-Methyl-4-quinazolone

Also known as: 5-Methylquinazolin-4-ol, 5-Methyl-4(1H)-quinazolinone, 5-Methyl-3H-quinazolin-4-one, 5-Methylquinazolin-4(3H)-one, 4(3H)-Quinazolinone, 5-methyl-, 4(1H)-Quinazolinone, 5-methyl-, 5-methyl-1H-quinazolin-4-one, 5-methyl-3H-quinazolin-4-one, 5-methyl-4-quinazolinol, 5-Methylquinazolin-4(1H)-one

5-Methyl-4-quinazolone (CAS 75844-41-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O and a molecular weight of 160.173 g/mol. Key properties include a melting point of 224ºC, a boiling point of 330.0±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 153.4±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 75844-41-6
Jingsj CID: J-1446385-5
Molecular Formula: C₉H₈N₂O
Molecular Weight: 160.173 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	224ºC
Boiling Point	330.0±35.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	153.4±25.9 °C
Exact Mass	160.063660
PSA	45.75000
LogP	1.23
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.644

Customs & Trade Information

HS Code	2927000090
Summary	2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 5-Methyl-4-quinazolone?

The CAS number of 5-Methyl-4-quinazolone is 75844-41-6.

What are the molecular formula and molecular weight of 5-Methyl-4-quinazolone?

5-Methyl-4-quinazolone has molecular formula C9H8N2O and molecular weight 160.173 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. "5-Methyl-4-quinazolone (CAS 75844-41-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1446385-5 (accessed 2026-11-09).

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