Baloxavir Impurity 139 CAS CATO-C4X-2108139
| CAS No. | CATO-C4X-2108139 |
| Molecular Formula | C14H11FO2S |
| Molecular Weight | 262.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Baloxavir Impurity 139 (CAS CATO-C4X-2108139), a pharmacopoeial impurity reference standard (molecular formula C14H11FO2S, MW 262.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C14H11FO2S, Baloxavir Impurity 139 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 262.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C14H11FO2S |
| Molecular Weight | 262.30 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Baloxavir Standards
- Baloxavir Impurity 137 (CAS CATO-C4X-2108137)
- Baloxavir Marboxil Impurity 159 (CAS 2563540-50-9)
- Baloxavir Impurity 143 (CAS CATO-C4X-2108143)
- Baloxavir Marboxil Impurity 199 (CAS CATO-C4X-2108199)
- Baloxavir Marboxil Impurity 200 (CAS CATO-C4X-2108200)
- Baloxavir Marboxil Impurity 205 (CAS CATO-C4X-2108205)
- Baloxavir Marboxil Impurity 222 (CAS CATO-C4X-2108222)
- Baloxavir Impurity 34 (CAS 2136287-66-4)
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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