Oseltamivir Impurity 147 CAS 28547-24-2
| CAS No. | 28547-24-2 |
| Molecular Formula | C8H8O5S |
| Molecular Weight | 216.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Oseltamivir Impurity 147 (CAS 28547-24-2), a certified reference material (molecular formula C8H8O5S, MW 216.21 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Oseltamivir Impurity 147 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H8O5S |
| Molecular Weight | 216.21 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Sulfur Atoms | 1 |
Related Oseltamivir Standards
- Oseltamivir EP Impurity H (CAS 814-29-9)
- Oseltamivir Impurity 286 (CAS CATO-C4X-1720286)
- Oseltamivir impurity 63 (CAS CATO-C4X-1720263)
- Oseltamivir EP Impurity D (CAS 1346604-18-9)
- Oseltamivir Impurity 216 (CAS CATO-C4X-1720216)
- Oseltamivir Impurity 101 (CAS CATO-C4X-1720101)
- Oseltamivir Impurity 121 (CAS CATO-C4X-1720121)
- Oseltamivir Impurity 79 (CAS CATO-C4X-172079)
Recommended Standards
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- Sulbenicillin Impurity 6 (CAS 41360-32-1)
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- Tolcapone (CAS 134308-13-7)
- 1-[(3-Fluorophenyl)methyl]-5-methyl-1H-1,2,3-triazole-4-carboxamide (CAS 1266846-75-6)
- 5-(Difluoromethyl)-2-iodo-3-nitroisonicotinonitrile (CAS 1805379-03-6)
- 3-(3-Fluorophenyl)-1,2,4-oxadiazol-5-amine (CAS 1249911-82-7)
- (4-Nitrophenyl)[5-(trifluoromethyl)-2,3-dihydro-1H-1,4-diazepin-1-yl]methanone (CAS 478249-14-8)
- Ethyl 4-methyl-2-(p-tolyl)thiazole-5-carboxylate (CAS 54001-09-1)
- Semaglutide Impurity 4 (CAS CATO-C4X-22264)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com