1-Phenylazetidin-2-one

Also known as: 1-PHENYLAZETIDIN-2-ONE, 1-Phenyl-2-Azetidinone, 1-Phenyl-2-azetidinon, 1-Phenyl-azetidin-2-on, 1-phenyl-azetidin-2-one, 1-phenylazetidin-2-one, 2-Azetidinone, 1-phenyl-, 2-Azetidinone,1-phenyl, N-Phenyl-β-lactam, N-phenyl-2-azetidinone, N-phenylazetidin-2-one

1-Phenylazetidin-2-one (CAS 5099-95-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NO and a molecular weight of 147.174 g/mol. Key properties include a boiling point of 346.2±11.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 172.4±10.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5099-95-6
Jingsj CID: J-972163-5
Molecular Formula: C₉H₉NO
Molecular Weight: 147.174 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	346.2±11.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	172.4±10.5 °C
Exact Mass	147.068420
PSA	20.31000
LogP	0.83
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.600

Customs & Trade Information

HS Code	2933790090
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1-Phenylazetidin-2-one?

The CAS number of 1-Phenylazetidin-2-one is 5099-95-6.

What are the molecular formula and molecular weight of 1-Phenylazetidin-2-one?

1-Phenylazetidin-2-one has molecular formula C9H9NO and molecular weight 147.174 g/mol.

What are the upstream and downstream products of 1-Phenylazetidin-2-one?

For 1-Phenylazetidin-2-one, Upstream Products: 2-Azetidinone, Bromobenzene, 3-bromo-N-phenylpropanamide; Downstream Products: 3-Anilino-1-propanol, 2,3-Dihydroquinolin-4(1H)-one, 4-Hydroxyquinoline.

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-Phenylazetidin-2-one (CAS 5099-95-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-972163-5 (accessed 2026-11-09).

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