(3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone

Also known as: Cis-3-hydroxy-4-phenyl-2-azetidinone, (3R,4S)-3-Hydroxy-4-phenylazetidin-2-one, (3R-cis)-3-hydroxy-4-phenyl-2-azetidinone, 2-Azetidinone, 3-hydroxy-4-phenyl-, (3R,4S)-, Cabazitaxel Impurity 56, MFCD07368374

(3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone (CAS 132127-34-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NO2 and a molecular weight of 163.173 g/mol. Key properties include a melting point of 187-188ºC, a boiling point of 430.4±45.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 214.1±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 132127-34-5
Jingsj CID: J-871459-8
Molecular Formula: C₉H₉NO₂
Molecular Weight: 163.173 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	187-188ºC
Boiling Point	430.4±45.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	214.1±28.7 °C
Exact Mass	163.063324
PSA	49.33000
LogP	-0.72
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.612

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 (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone?

The CAS number of (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone is 132127-34-5.

What are the molecular formula and molecular weight of (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone?

(3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone has molecular formula C9H9NO2 and molecular weight 163.173 g/mol.

What are the upstream and downstream products of (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone?

For (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone, Upstream Products: Benzaldehyde; Downstream Products: (3R,4S)-3-(1-Ethoxyethoxy)-4-phenyl-2-azetidinone, (2R,3S)-3-Benzamido-2-hydroxy-3-phenylpropanoic acid, (2R,3S)-3-Phenylisoserine.

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. "(3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone (CAS 132127-34-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-871459-8 (accessed 2026-11-09).

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