5H-dibenzo[a,d]cyclohepten-5-one oxime

5H-二苯并[a,d]环庚烯-5-酮肟

Also known as: 5H-Dibenzo[a,d][7]annulen-5-one oxime, Dibenzosuberenone oxime, NSC 83397, EINECS 213-820-0, N-(dibenzo[1,2-a:1',2'-e][7]annulen-11-ylidene)hydroxylamine

5H-dibenzo[a,d]cyclohepten-5-one oxime (CAS 1021-91-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C15H11NO and a molecular weight of 221.25400 g/mol. It is also known as 5H-Dibenzo[a,d][7]annulen-5-one oxime, Dibenzosuberenone oxime and NSC 83397. Key properties include a boiling point of 398.4ºC at 760mmHg, a density of 1.16g/cm3 and a flash point of 255.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1021-91-6
Jingsj CID
J-1495051-5
Molecular Formula
C15H11NO
Chinese Name
5H-二苯并[a,d]环庚烯-5-酮肟
Molecular Weight
221.25400 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point398.4ºC at 760mmHg
Density1.16g/cm3
Flash Point255.5ºC

Frequently Asked Questions

What is the CAS number of 5H-dibenzo[a,d]cyclohepten-5-one oxime?

The CAS number of 5H-dibenzo[a,d]cyclohepten-5-one oxime is 1021-91-6.

What are the molecular formula and molecular weight of 5H-dibenzo[a,d]cyclohepten-5-one oxime?

5H-dibenzo[a,d]cyclohepten-5-one oxime has molecular formula C15H11NO and molecular weight 221.25400 g/mol.

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

Last updated:

How to cite: Jingsj. "5H-dibenzo[a,d]cyclohepten-5-one oxime (CAS 1021-91-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495051-5 (accessed 2026-10-25).

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