3,4-Dihydroquinazolin-2(1H)-one
3,4-二氢-1H-喹唑啉-2-酮
Also known as: 3,4-dihydro-2(1H)-quinazolinone, 1,2,3,4-tetrahydroquinazolin-2-one, 2(1H)-Quinazolinone, 3,4-dihydro-, 3,4-Dihydro-1H-quinazolin-2-one, 3,4-Dihydro-1H-quizolin-2-one, Dihydroquinazolinone
3,4-Dihydroquinazolin-2(1H)-one (CAS 66655-67-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H8N2O and a molecular weight of 148.162 g/mol. It is also known as 3,4-dihydro-2(1H)-quinazolinone, 1,2,3,4-tetrahydroquinazolin-2-one and 2(1H)-Quinazolinone, 3,4-dihydro-. Key properties include a melting point of 241-242ºC, a boiling point of 257.2±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 119.7±25.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66655-67-2
- Jingsj CID
- J-1459898-4
- Molecular Formula
- C8H8N2O
- Chinese Name
- 3,4-二氢-1H-喹唑啉-2-酮
- Molecular Weight
- 148.162 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 241-242ºC |
|---|---|
| Boiling Point | 257.2±33.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 119.7±25.5 °C |
Frequently Asked Questions
What is the CAS number of 3,4-Dihydroquinazolin-2(1H)-one?
The CAS number of 3,4-Dihydroquinazolin-2(1H)-one is 66655-67-2.
What are the molecular formula and molecular weight of 3,4-Dihydroquinazolin-2(1H)-one?
3,4-Dihydroquinazolin-2(1H)-one has molecular formula C8H8N2O and molecular weight 148.162 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dihydroquinazolin-2(1H)-one (CAS 66655-67-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1459898-4 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.