1-Phenyl-[1,4]diazepan-5-one

Also known as: 1-Phenyl-1,4-diazepan-5-one, 1-phenyl-hexahydro-[1,4]diazepin-5-one, 5H-1,4-diazepin-5-one, hexahydro-1-phenyl-, hexahydro-1-phenyl-5H-1,4-diazepin-5-one

1-Phenyl-[1,4]diazepan-5-one (CAS 55186-91-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H14N2O and a molecular weight of 190.242 g/mol. Key properties include a boiling point of 407.8±38.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 200.4±26.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 55186-91-9
Jingsj CID: J-1108304-8
Molecular Formula: C₁₁H₁₄N₂O
Molecular Weight: 190.242 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	407.8±38.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	200.4±26.8 °C
Exact Mass	190.110611
PSA	35.83000
LogP	-0.13
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.547

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-Phenyl-[1,4]diazepan-5-one?

The CAS number of 1-Phenyl-[1,4]diazepan-5-one is 55186-91-9.

What are the molecular formula and molecular weight of 1-Phenyl-[1,4]diazepan-5-one?

1-Phenyl-[1,4]diazepan-5-one has molecular formula C11H14N2O and molecular weight 190.242 g/mol.

What are the upstream and downstream products of 1-Phenyl-[1,4]diazepan-5-one?

For 1-Phenyl-[1,4]diazepan-5-one, Upstream Products: 1-Phenylpiperidin-4-one.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1-Phenyl-[1,4]diazepan-5-one (CAS 55186-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1108304-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.