(3R,4S)-1-Benzoyl-4-Phenyl-3-[(triethylsilyl)oxy]-2-Azetidinone CAS 149249-91-2
| CAS No. | 149249-91-2 |
| Molecular Formula | C22H27NO3Si |
| Molecular Weight | 381.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (3R,4S)-1-Benzoyl-4-Phenyl-3-[(triethylsilyl)oxy]-2-Azetidinone.
(3R,4S)-1-Benzoyl-4-Phenyl-3-[(triethylsilyl)oxy]-2-Azetidinone (CAS 149249-91-2), molecular formula C22H27NO3Si and molecular weight 381.54 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H27NO3Si, (3R,4S)-1-Benzoyl-4-Phenyl-3-[(triethylsilyl)oxy]-2-Azetidinone contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 381.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H27NO3Si |
| Molecular Weight | 381.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
Recommended Standards
- Prasugrel Impurity 17 (CAS 109904-25-8)
- (S)-5-amino-1'-((2-(trimethylsilyl)ethoxy)methyl)-1,3-dihydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one (CAS 939016-96-3)
- Trichloro(3,3,4,4,5,5,6,6,6-nonafluorohexyl)silane (CAS 78560-47-1)
- 3-(((tert-Butyldiphenylsilyl)oxy)methyl)-4-ethyl-1H-1,2,4-triazol-5(4H)-one (CAS 2472972-28-2)
- 1-(4-tert-Butylbenzoyl)-2-methylpiperazine (CAS 1240578-12-4)
- 2-Chloro-7-Fluoroimidazo[1,2-a]pyridine (CAS 1260826-05-8)
- (2-Fluoro-5-(methoxycarbamoyl)phenyl)boronic acid (CAS 874289-58-4)
- 1,5-Dimethyl-1H-pyrrole-2-carboximidamide hydrochloride (CAS 744193-07-5)
- 2-Chloro-6,7-dihydro-1,7-naphthyridin-8(5H)-one hydrochloride (CAS 1375302-07-0)
- 2,2'-Sulfonylbis(4-(2,4,4-trimethylpentan-2-yl)phenol) (CAS 15452-89-8)
- Methyl b-D-xylofuranoside (CAS 1824-97-1)
- 5-(4-Fluorophenyl)-3,3-dimethylpentanoic acid (CAS 1341062-14-3)
- 4-[4-(2-Thienyl)-2-pyrimidinyl]phenyl benzenecarboxylate (CAS 477862-90-1)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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