Oseltamivir Impurity 79 CAS CATO-C4X-172079
| CAS No. | CATO-C4X-172079 |
| Molecular Formula | C11H17NO4 |
| Molecular Weight | 227.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Oseltamivir Impurity 79 (CAS CATO-C4X-172079, C11H17NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Oseltamivir Impurity 79 (C11H17NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 227.26 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C11H17NO4 |
| Molecular Weight | 227.26 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 methanol, ethanol, DMSO |
| 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 |
| Nitrogen Atoms | 1 |
Related Oseltamivir Standards
- Oseltamivir Impurity 260 (CAS 221386-93-2)
- Oseltamivir Impurity 78 (CAS CATO-C4X-172078)
- Oseltamivir Impurity 101 (CAS CATO-C4X-1720101)
- Oseltamivir Impurity 121 (CAS CATO-C4X-1720121)
- Oseltamivir Impurity 140 (CAS 1246620-91-6)
- Oseltamivir impurity 63 (CAS CATO-C4X-1720263)
- Oseltamivir EP Impurity D (CAS 1346604-18-9)
- Oseltamivir EP Impurity H (CAS 814-29-9)
Recommended Standards
- Mesna Impurity 3 (CAS 1823982-49-5)
- Pranoprofen Impurity 11 (CAS CATO-C4X-181111)
- Ketorolac EP Impurity A (CAS 154476-25-2)
- Pranoprofen Impurity 65 (CAS CATO-C4X-181165)
- Baloxavir Impurity 52 (CAS 1228258-40-9)
- Linagliptin Impurity 80 (2-Piperidinamine) (CAS 45505-62-2)
- Clopidogrel Impurity 31 (CAS 19995-38-1)
- (3-(1h-1,2,3-Triazol-1-yl)phenyl)methanamine (CAS 1369017-23-1)
- N,N-Dimethyl-2-((1-methyl-1H-pyrazol-5-yl)(thiophen-2-yl)methoxy)ethanamine (CAS 247046-52-2)
- 5-Bromo-3-methoxy-2-methylpyridine (CAS 1150617-80-3)
- [1-(2,3-Dimethylphenyl)-1H-1,2,3-triazol-4-yl]methanol (CAS 1251237-12-3)
- 3-(2-(Methoxycarbonyl)phenyl)propanoic acid (CAS 81329-74-0)
- p-Coumaric acid-[13C3] (CAS 1261170-80-2)
- Acetyl tetrapeptide-9(Dermican LS 9837) (CAS 928006-50-2)
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