3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one

3,4-二氢-1,4-苯并氧氮杂卓-5(2H)-酮

Also known as: 3,4-dihydro-1,4-benzoxazepin-5(2H)-one, 3,4-Dihydro-2H-benzo[f][1,4]oxazepin-5-one, 3,4-dihydro-2H-1,4-benzoxazepin-5-one, 2,3,4,5-tetrahydro-1,4-benzoxazepin-5-one, 2,3-dihydro-1,4-benzoxazepin-5(4H)-one, 2-oxa-5-azabicyclo[5.4.0]undeca-7,9,11-trien-6-one, NSC 371485

3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one (CAS 703-51-5) 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 3,4-dihydro-1,4-benzoxazepin-5(2H)-one, 3,4-Dihydro-2H-benzo[f][1,4]oxazepin-5-one and 3,4-dihydro-2H-1,4-benzoxazepin-5-one. Key properties include a melting point of 115-116 °C, a boiling point of 404.7ºC at 760 mmHg, a density of 1.186g/cm3 and a flash point of 198.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

703-51-5

Jingsj CID

J-921598-4

Molecular Formula

C₉H₉NO₂

Chinese Name

3,4-二氢-1,4-苯并氧氮杂卓-5(2H)-酮

Molecular Weight

163.17300 g/mol

Category

Ketones

Last updated

8/21/2026