Oseltamivir impurity 232 CAS CATO-C4X-1720232
| CAS No. | CATO-C4X-1720232 |
| Molecular Formula | C22H35N3O5 |
| Molecular Weight | 421.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Oseltamivir impurity 232 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Oseltamivir impurity 232 (CAS CATO-C4X-1720232), a pharmacopoeial impurity reference standard (molecular formula C22H35N3O5, MW 421.53 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Oseltamivir impurity 232 (C22H35N3O5) is characterized by a flavonoid core, 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.
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 | C22H35N3O5 |
| Molecular Weight | 421.53 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Oseltamivir Standards
- Oseltamivir Impurity 117 (CAS 2413185-90-5)
- Oseltamivir Impurity 120 (CAS CATO-C4X-1720120)
- Oseltamivir Impurity 199 (CAS CATO-C4X-1720199)
- Oseltamivir Impurity 43 (CAS CATO-C4X-172043)
- Oseltamivir Impurity 44 (CAS 2413185-87-0)
- Oseltamivir Impurity 27 (CAS CATO-C4X-1720227)
- Oseltamivir glucose adduct-2 (CAS CATO-C4X-172048)
- Oseltamivir Impurity 114 (CAS CATO-C4X-1720114)
Recommended Standards
- Tirofiban Impurity 86 (CAS CATO-C4X-125486)
- Cobicistat impurity 8 (CAS CATO-C4X-18168)
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- Latanoprost Impurity 30 (CAS CATO-C4X-194130)
- Larotrectinib impurity 6 (CAS 1223404-88-3)
- Vericiguat Impurity 105 (CAS CATO-C4X-2896105)
- Hydrochlorothiazide Impurity 33 (CAS CATO-C4X-117733)
- 2-(Isopropylsulfonyl)acetic Acid (CAS 135242-40-9)
- 1-chloro-1-(4-fluorophenyl)propan-2-one (CAS 23211-68-9)
- METHYL 3-METHOXYPYRAZINE-2-CARBOXYLATE (CAS 40155-20-2)
- 1-(3,5-Dimethyl-1-phenyl-1h-pyrazol-4-yl)-2,2,2-trifluoroethan-1-ol (CAS 1354951-96-4)
- 1-(5-Nitropyridin-2-yl)-4-phenylpiperazine (CAS 400088-76-8)
- (S)-tert-Butyl 1-[(pyridin-4-yl)carbonyl]pyrrolidin-3-ylcarbamate (CAS 1349702-32-4)
- Antistasin-Related Peptide (CAS 161561-46-2)
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