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2,3-Dihydro-1,5-benzoxazepin-4(5H)-one

2,3-二氢-1,5-苯并氧氮杂卓-4(5H)-酮

Also known as: 2,3,4,5-TETRAHYDRO-1,5-BENZOXAZEPIN-4-ONE, 3,5-dihydro-2H-1,5-benzoxazepin-4-one, 1,3,4,5-TETRAHYDRO-5-OXA-BENZO[B]AZEPIN-2-ONE, 2,3-dihydrobenzo[b][1,4]oxazepin-4(5H)-one, 6,7-dihydro-9H-5-oxa-9-aza-benzocyclohepten-8-one

2,3-Dihydro-1,5-benzoxazepin-4(5H)-one (CAS 704-48-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NO2 and a molecular weight of 163.17300 g/mol. It is also known as 2,3,4,5-TETRAHYDRO-1,5-BENZOXAZEPIN-4-ONE, 3,5-dihydro-2H-1,5-benzoxazepin-4-one and 1,3,4,5-TETRAHYDRO-5-OXA-BENZO[B]AZEPIN-2-ONE. Key properties include a melting point of 128-129ºC, a boiling point of 346ºC, a density of 1.186 and a flash point of 163ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
704-48-3
Jingsj CID
J-990516-0
Molecular Formula
C9H9NO2
Chinese Name
2,3-二氢-1,5-苯并氧氮杂卓-4(5H)-酮
Molecular Weight
163.17300 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point128-129ºC
Boiling Point346ºC
Density1.186
Flash Point163ºC

Frequently Asked Questions

What is the CAS number of 2,3-Dihydro-1,5-benzoxazepin-4(5H)-one?

The CAS number of 2,3-Dihydro-1,5-benzoxazepin-4(5H)-one is 704-48-3.

What are the molecular formula and molecular weight of 2,3-Dihydro-1,5-benzoxazepin-4(5H)-one?

2,3-Dihydro-1,5-benzoxazepin-4(5H)-one has molecular formula C9H9NO2 and molecular weight 163.17300 g/mol.

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

Last updated:

How to cite: Jingsj. "2,3-Dihydro-1,5-benzoxazepin-4(5H)-one (CAS 704-48-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-990516-0 (accessed 2026-10-24).

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