Oseltamivir impurity 292 CAS 1402431-91-7
| CAS No. | 1402431-91-7 |
| Molecular Formula | C16H28N2O4 |
| Molecular Weight | 312.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Oseltamivir impurity 292 (CAS 1402431-91-7) is a certified pharmaceutical impurity reference standard with the molecular formula C16H28N2O4 and a molecular weight of 312.40 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Oseltamivir impurity 292 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 312.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C16H28N2O4 |
| Molecular Weight | 312.40 g/mol |
| Appearance | Off-white to pale 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 118 (CAS CATO-C4X-1720118)
- Oseltamivir Impurity 119 (CAS 2081110-43-0)
- Oseltamivir Impurity 144 (CAS 2413185-95-0)
- Oseltamivir Impurity 173 (CAS 2081110-44-1)
- Oseltamivir EP Impurity G (CAS 956267-10-0)
- Oseltamivir Impurity 70 (CAS CATO-C4X-172070)
- Oseltamivir (CAS 196618-13-0)
- Oseltamivir impurity 289 (CAS 1443055-47-7)
Recommended Standards
- Ethinylestradiol EP Impurity F (CAS 56324-28-8)
- Levonorgestrel Impurity 42 (CAS 62298-52-6)
- Ethinylestradiol EP Impurity E (6-alpha-Hydroxy Ethynylestradiol) (CAS 27521-34-2)
- Exemestane Impurity 6 (CAS 159354-61-7)
- Thioctic Acid Impurity N8 (CAS 41443-60-1)
- Nicotine Impurity 6 (CAS 591-22-0)
- Esomeprazole Impurity N1 (CAS 848696-99-1)
- (3-(1,3-Dioxolan-2-yl)phenyl)methanamine (CAS 875582-75-5)
- Desloratadine Impurity 63 (CAS CATO-C4X-143063)
- 2,4-Dimethyl 5-acetamido-3-(2-methoxy-2-oxoethyl)thiophene-2,4-dicarboxylate (CAS 338393-18-3)
- 2,6-Dichloro-3-(hydrazonomethyl)pyridine (CAS 2140803-84-3)
- N-(2-Chloro-3-(trifluoromethyl)phenyl)acetamide (CAS 546434-27-9)
- Sodium Fusidate EP Impurity O (CAS 13090-91-0)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
Why CATO?
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