Oseltamivir fructose adduct impurity 91 CAS CATO-C4X-1720291
| CAS No. | CATO-C4X-1720291 |
| Molecular Formula | C23H40N2O8 |
| Molecular Weight | 472.57 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 fructose adduct impurity 91 (CAS CATO-C4X-1720291, C23H40N2O8) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Oseltamivir fructose adduct impurity 91 (C23H40N2O8) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C23H40N2O8 |
| Molecular Weight | 472.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 167 (CAS CATO-C4X-1720167)
- Oseltamivir Impurity 168 (CAS CATO-C4X-1720168)
- Oseltamivir Glucose Adduct 1 (CAS CATO-C4X-1720182)
- Oseltamivir Glucose Adduct 23 (CAS CATO-C4X-172023)
- Oseltamivir impurity 234 (CAS CATO-C4X-1720234)
- Oseltamivir Impurity 252 (CAS CATO-C4X-1720252)
- Oseltamivir Impurity 253 (CAS CATO-C4X-1720253)
- Oseltamivir Impurity 254 (CAS CATO-C4X-1720254)
Recommended Standards
- Mupirocin EP Impurity F (CAS 167842-64-0)
- Methylprednisolone Impurity 49 (CAS CATO-C4X-191949)
- Hydrocortisone Impurity 73 (CAS CATO-C4X-140173)
- 6alpha-Methyl Prednisolone Aceponate (CAS 86401-95-8)
- Carbidopa EP Impurity E (CAS 52514-63-3)
- Abiraterone Impurity 78 (CAS 98449-11-7)
- Estazolam Impurity 3 (CAS 10352-28-0)
- (2S,3R)-2-methylazetidin-3-ol;hydrochloride (CAS 1821740-20-8)
- Leuprorelin impurity 36 (CAS 1926163-25-8)
- Methanesulfonohydrazide (CAS 10393-86-9)
- 3-[(3-methyl-2,5-dioxoimidazolidin-1-yl)methyl]benzonitrile (CAS 1042646-00-3)
- 7-(4-Phenylbut-2-en-2-yl)quinolin-8-ol (CAS 64744-03-2)
- 5-((2,4,6-Trichlorophenoxy)methyl)furan-2-carboxylic acid (CAS 438220-90-7)
- Allo-D-Ile17-Tirzepatide (CAS CATO-CPTD788962)
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