Voriconazole Impurity 7 CAS CATO-C4X-13667
| CAS No. | CATO-C4X-13667 |
| Molecular Formula | C12H20O4S |
| Molecular Weight | 260.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Voriconazole Impurity 7 (CAS CATO-C4X-13667) is a certified pharmaceutical impurity reference standard with the molecular formula C12H20O4S and a molecular weight of 260.35 g/mol.
Based on its molecular formula C12H20O4S, Voriconazole Impurity 7 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 260.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C12H20O4S |
| Molecular Weight | 260.35 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Sulfur Atoms | 1 |
Related Voriconazole Standards
- Voriconazole Impurity 43 (CAS 154335-57-6)
- Voriconazole Impurity 82 (CAS CATO-C4X-136682)
- Voriconazole Impurity 8 (CAS 83603-04-7)
- Voriconazole Impurity 3 (CAS 188416-28-6)
- Voriconazole Impurity 72 (CAS CATO-C4X-136672)
- Voriconazole Impurity 28 (CAS 1307315-02-1)
- Voriconazole Impurity 66 (CAS CATO-C4X-136666)
- Voriconazole Impurity 86 (CAS CATO-C4X-136686)
Recommended Standards
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- Ketoprofen Impurity 68 (CAS CATO-C4X-147168)
- N-Ethyl-2-oxo-1,2-dihydropyridine-3-sulfonamide (CAS 1774901-78-8)
- (6-Chloroimidazo[1,2-a]pyrazin-8-yl)methanol (CAS 2769932-57-0)
- 1-Bromo-2-(bromomethyl)-4-nitrobenzene (CAS 939-82-2)
- (R)-2-(3,3-dimethylureido)-2-phenylacetic acid (CAS 1007879-93-7)
- 6-Bromo-4-fluoro-2,3-dihydro-1H-isoindole hydrochloride (CAS 2007915-89-9)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
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