2-(Methylthio)quinazolin-4(3H)-one

2-甲硫基-4-喹唑啉酮

Also known as: 2-(METHYLSULFANYL)-4(3H)-QUINAZOLINONE, 2-(Methylthio)quinazolin-4(1H)-one, 2-Methylsulfanyl-3H-quinazolin-4-one, 2-Methylthio-4(3H)-quinazolinone, 4(3H)-Quinazolinone, 2-(methylthio)-, 2-methylsulfanyl-1H-quinazolin-4-one, 2-(methylsulfanyl)-3,4-dihydroquinazolin-4-one

2-(Methylthio)quinazolin-4(3H)-one (CAS 54855-81-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8N2OS and a molecular weight of 192.23800 g/mol. It is also known as 2-(METHYLSULFANYL)-4(3H)-QUINAZOLINONE, 2-(Methylthio)quinazolin-4(1H)-one and 2-Methylsulfanyl-3H-quinazolin-4-one. Key properties include a boiling point of 355.5ºC at 760 mmHg, a density of 1.36g/cm3 and a flash point of 168.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 54855-81-1
Jingsj CID: J-868595-1
Molecular Formula: C₉H₈N₂OS
Chinese Name: 2-甲硫基-4-喹唑啉酮
Molecular Weight: 192.23800 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	355.5ºC at 760 mmHg
Density	1.36g/cm3
Flash Point	168.8ºC

Frequently Asked Questions

What is the CAS number of 2-(Methylthio)quinazolin-4(3H)-one?

The CAS number of 2-(Methylthio)quinazolin-4(3H)-one is 54855-81-1.

What are the molecular formula and molecular weight of 2-(Methylthio)quinazolin-4(3H)-one?

2-(Methylthio)quinazolin-4(3H)-one has molecular formula C9H8N2OS and molecular weight 192.23800 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-(Methylthio)quinazolin-4(3H)-one (CAS 54855-81-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-868595-1 (accessed 2026-10-24).

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