6-Chloro-2-methylquinazolin-4(3H)-one

Also known as: 4(1H)-Quinazolinone, 6-chloro-2-methyl-, 4(3H)-quinazolinone, 6-chloro-2-methyl-, 6-Chloro-2-methyl-3H-quinazolin-4-one, 6-Chloro-2-methyl-4(1H)-quinazolinone, 6-Chloro-2-methylquinazolin-4(1H)-one, 6-Chloro-4-hydroxy-2-methylquinazoline, 6-chloro-2-methyl-1H-quinazolin-4-one, 6-chloro-2-methylquinazolin-4-ol, 6-chlro-2-methylquinazolin-4-ol, NSC 45786

6-Chloro-2-methylquinazolin-4(3H)-one (CAS 7142-09-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H7ClN2O and a molecular weight of 194.618 g/mol. Key properties include a boiling point of 355.1±44.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 168.6±28.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7142-09-8
Jingsj CID: J-1348422-5
Molecular Formula: C₉H₇ClN₂O
Molecular Weight: 194.618 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	355.1±44.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	168.6±28.4 °C
Exact Mass	194.024689
PSA	45.75000
LogP	1.31
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.664
Storage Conditions	2-8°C

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 6-Chloro-2-methylquinazolin-4(3H)-one?

The CAS number of 6-Chloro-2-methylquinazolin-4(3H)-one is 7142-09-8.

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

6-Chloro-2-methylquinazolin-4(3H)-one has molecular formula C9H7ClN2O and molecular weight 194.618 g/mol.

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

For 6-Chloro-2-methylquinazolin-4(3H)-one, Upstream Products: 2-Bromo-5-chlorobenzoic acid, Acetamidine hydrochloride, Methyl 2-bromo-5-chlorobenzoate.

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. "6-Chloro-2-methylquinazolin-4(3H)-one (CAS 7142-09-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1348422-5 (accessed 2026-11-09).

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