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(3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone

Also known as: (3R,4S)-3-[(Triethylsilyl)oxy]-4-phenyl-2-azetidinone, (3R,4S)-4-Phenyl-3-triethylsilyloxyazetidin-2-one, (3R-cis)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone, 2-Azetidinone, 4-phenyl-3-[(triethylsilyl)oxy]-, (3R,4S)-, 4-Phenyl-3-triethylsilanyloxy-azetidin-2-one, Cabazitaxel Impurity 57, Cephalomannine Impurity 7, Docetaxel side chain silicide (without protective groups)

(3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone (CAS 149140-54-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C15H23NO2Si and a molecular weight of 277.43400 g/mol. Key properties include a boiling point of 393.216ºC at 760 mmHg, a density of 1.04g/cm3 and a flash point of 191.611ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
149140-54-5
Jingsj CID
J-1307670-5
Molecular Formula
C15H23NO2Si
Molecular Weight
277.43400 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point393.216ºC at 760 mmHg
Density1.04g/cm3
Flash Point191.611ºC
Exact Mass277.15000
PSA41.82000
LogP3.52380
Vapor Pressure0mmHg at 25°C
Refractive Index1.516

Frequently Asked Questions

What is the CAS number of (3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone?

The CAS number of (3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone is 149140-54-5.

What are the molecular formula and molecular weight of (3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone?

(3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone has molecular formula C15H23NO2Si and molecular weight 277.43400 g/mol.

What are the upstream and downstream products of (3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone?

For (3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone, Upstream Products: Chlorotriethylsilane, (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone, Imidazole; Downstream Products: (3R,4S)-tert-Butyl 2-oxo-4-phenyl-3-(triethylsilyloxy)azetidine-1-carboxylate, (3R,4S)-1-Benzoyl-4-phenyl-3-[(triethylsilyl)oxy]-2-azetidinone.

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

Last updated:

How to cite: Jingsj. "(3R,4S)-4-Phenyl-3-[(triethylsilyl)oxy]-2-azetidinone (CAS 149140-54-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1307670-5 (accessed 2026-11-09).

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