Oseltamivir Phosphate CAS 204255-11-8
| CAS No. | 204255-11-8 |
| Molecular Formula | C16H28N2O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 410.40 g/mol gives Oseltamivir Phosphate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Oseltamivir Phosphate (CAS 204255-11-8), molecular formula C16H28N2O4H3O4P and molecular weight 410.40 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Oseltamivir Phosphate (C16H28N2O4H3O4P) contains an amide group, a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.5, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 410.40 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.
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 H3O4P |
| Molecular Weight | 410.40 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 2 |
Related Oseltamivir Standards
- Oseltamivir Impurity 133 (CAS 10098-40-5)
- Oseltamivir impurity 265 Phosphate (CAS 1035895-88-5)
- Ent-Oseltamivir HCl (CAS 1035895-88-5(Free Base))
- Ent-Oseltamivir Phosphate (CAS 1035895-89-6)
- Oseltamivir Impurity N42 (CAS 1052063-36-1)
- Oseltamivir EP Impurity F HCl（Mixture of Diastereomers） (CAS 1052063-37-2（free base）)
- Oseltamivir-d3 (CAS 1093851-61-6)
- Oseltamivir Hydrochloride D3 (CAS 1093851-61-6(free base))
Recommended Standards
- 2,3,6,7,10,11-Hexamethoxytriphenylene (CAS 808-57-1)
- 3-(4-Fluorophenyl)-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 370098-34-3)
- 2-[2-(4-hydroxyphenyl)-1,3-thiazol-4-yl]acetic acid (CAS 23551-34-0)
- 4-Methoxy-2-(2-phenyl-6-(trifluoromethyl)pyrimidin-4-yl)phenol (CAS 348131-46-4)
- 2,6-Dimethylbenzonitrile (CAS 6575-13-9)
- N-(4-(5-chloro-2-methylphenyl)piperazin-1-yl)-N-(3-(trifluoromethyl)phenyl)formamide (CAS 401637-50-1)
- 2,3,4,7,8-Pentabromodibenzofuran (CAS 131166-92-2)
- 3-Thiophenecarbonyl Chloride (CAS 41507-35-1)
- 5-Bromo-4-fluoro-2-methyl-1H-pyrrolo[2,3-b]pyridine (CAS 1352398-35-6)
- HA Peptide (CAS 92000-76-5)
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