2-Methyl-4(3H)-quinazolinone

Also known as: 2-Methylquinazolin-4-ol, 4-Hydroxy-2-methylquinazoline, 2-Methyl-1,3-diazanaphthalene-4-ol, 2-Methyl-3,4-dihydroquinazoline-4-one, 2-methylquinazolin-4(1H)-one, 4-Quinazolinol, 2-methyl-, AURORA KA-3754, EINECS 217-189-2, MFCD00006887, b101

2-Methyl-4(3H)-quinazolinone (CAS 1769-24-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O and a molecular weight of 160.17300 g/mol. Key properties include a melting point of 231-233ºC(lit.), a boiling point of 305.4ºC at 760 mmHg, a density of 1.26 g/cm3 and a flash point of 138.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1769-24-0
Jingsj CID: J-1963356-8
Molecular Formula: C₉H₈N₂O
Molecular Weight: 160.17300 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	231-233ºC(lit.)
Boiling Point	305.4ºC at 760 mmHg
Density	1.26 g/cm3
Flash Point	138.5ºC
Exact Mass	160.06400
PSA	45.75000
LogP	1.23150

Activity & Biological Data

Additional Information	[1]. S Yoshida, et al. Production of 2-methyl-4[3H]-quinazolinone, an inhibitor of poly(ADP-ribose) synthetase, by bacterium. J Antibiot (Tokyo). 1991 Jan;44(1):111-2. [2]. Mahmoud Balbaa, et al. Inhibition of mammalian aspartate transcarbamylase by quinazolinone derivatives. J Enzyme Inhib Med Chem. 2008 Aug;23(4):483-92.

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-Methyl-4(3H)-quinazolinone?

The CAS number of 2-Methyl-4(3H)-quinazolinone is 1769-24-0.

What are the molecular formula and molecular weight of 2-Methyl-4(3H)-quinazolinone?

2-Methyl-4(3H)-quinazolinone has molecular formula C9H8N2O and molecular weight 160.17300 g/mol.

What are the upstream and downstream products of 2-Methyl-4(3H)-quinazolinone?

For 2-Methyl-4(3H)-quinazolinone, Upstream Products: 2-Acetamidobenzamide, Acetamidine hydrochloride, 2-Bromobenzoic acid; Downstream Products: 4-Oxo-3,4-dihydroquinazoline-2-carbaldehyde, 2,3-Dimethyl-3H-quinazolin-4-one, 3-Amino-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-Methyl-4(3H)-quinazolinone (CAS 1769-24-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1963356-8 (accessed 2026-11-09).

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