1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one

1,3,4,5-四氢-2H-1,3-苯并二氮杂卓-2-酮

Also known as: 1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one, 4,5-Dihydro-1H-benzo[d][1,3]diazepin-2(3H)-one, 1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one, 2,3,4,5-tetrahydro-1H-1,3-benzodiazepin-2-one, 2-oxo-1,3,4,5-tetrahydro-1,3-benzodiazepine, 1,3,4,5-tetrahydro-benzo[d][1,3]diazepin-2-one, 1,3,4,5-tetrahydro-2H-benzo-diazepin-2-one

1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one (CAS 41921-63-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H10N2O and a molecular weight of 162.189 g/mol. It is also known as 1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one, 4,5-Dihydro-1H-benzo[d][1,3]diazepin-2(3H)-one and 2,3,4,5-tetrahydro-1H-1,3-benzodiazepin-2-one. Key properties include a melting point of 170.5-171.0ºC, a boiling point of 274.5±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 122.1±25.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
41921-63-5
Jingsj CID
J-1177696-7
Molecular Formula
C9H10N2O
Chinese Name
1,3,4,5-四氢-2H-1,3-苯并二氮杂卓-2-酮
Molecular Weight
162.189 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point170.5-171.0ºC
Boiling Point274.5±33.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point122.1±25.5 °C

Frequently Asked Questions

What is the CAS number of 1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one?

The CAS number of 1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one is 41921-63-5.

What are the molecular formula and molecular weight of 1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one?

1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one has molecular formula C9H10N2O and molecular weight 162.189 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1,3,4,5-tetrahydro-2H-1,3-benzodiazepin-2-one (CAS 41921-63-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1177696-7 (accessed 2026-10-22).

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