(R)-tert-Butyl 4-(2-oxo-2-(2-oxo-4-phenyloxazolidin-3-yl)ethyl)piperidine-1-carboxylate CAS 1159845-42-7
| CAS No. | 1159845-42-7 |
| Molecular Formula | C21H28N2O5 |
| Molecular Weight | 388.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(R)-tert-Butyl 4-(2-oxo-2-(2-oxo-4-phenyloxazolidin-3-yl)ethyl)piperidine-1-carboxylate (CAS 1159845-42-7), molecular formula C21H28N2O5 and molecular weight 388.46 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (R)-tert-Butyl 4-(2-oxo-2-(2-oxo-4-phenyloxazolidin-3-yl)ethyl)piperidine-1-carboxylate (C21H28N2O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 388.46 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C21H28N2O5 |
| Molecular Weight | 388.46 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 3-{3-tert-butyl-1-methyl-4-oxo-1H,4H-indeno[1,2-c]pyrazol-6-yl}-1-(2-methylphenyl)urea (CAS 1024523-14-5)
- tert-Butyl 4-cyano-4-[4-(2-furoyl)piperazin-1-yl]piperidine-1-carboxylate (CAS 1172561-02-2)
- Gomisin J (CAS 66280-25-9)
- tert-Butyl 4-(2-(ethoxycarbonyl)-4-methylbenzofuran-5-yl)piperazine-1-carboxylate (CAS 1192172-70-5)
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- 4-Amino-5-(difluoromethyl)-3-nitropicolinonitrile (CAS 1805928-64-6)
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- (2R,3R,4S,5R)-2-(2-Chloro-6-(piperidin-1-ylamino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 151665-95-1)
- 5-Chloro-2-(trifluoromethyl)isonicotinaldehyde (CAS 1060810-29-8)
- 1-(2-methoxypyridin-4-yl)propan-2-one (CAS 1532631-84-7)
- 4-Methyl-N-(piperidin-4-ylmethyl)benzamide (CAS 81185-84-4)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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