Fluconazole Impurity 47 CAS CATO-C4X-101947
| CAS No. | CATO-C4X-101947 |
| Molecular Formula | C23H19F4N9O2 |
| Molecular Weight | 529.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fluconazole Impurity 47.
Fluconazole Impurity 47 (CAS CATO-C4X-101947) is a certified pharmaceutical impurity reference standard with the molecular formula C23H19F4N9O2 and a molecular weight of 529.45 g/mol.
Based on its molecular formula C23H19F4N9O2, Fluconazole Impurity 47 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 529.45 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.
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 | C23H19F4N9O2 |
| Molecular Weight | 529.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 9 |
Related Fluconazole Standards
- Fluconazole Impurity 55 (CAS CATO-C4X-101955)
- Fluconazole Impurity 75 (CAS CATO-C4X-101975)
- Fluconazole β-D-glucuronide (CAS 136134-23-1)
- Fluconazole Impurity 24 (CAS CATO-C4X-101924)
- Fluconazole Impurity 56 (CAS CATO-C4X-101956)
- Fluconazole Impurity 36 (CAS CATO-C4X-101936)
- Fluconazole Impurity 23 (CAS 1609495-95-5)
- Fluconazole EP Impurity B (CAS 871550-15-1)
Recommended Standards
- (4S,5S,6S)-4-(((allyloxy)carbonyl)amino)-6-methyltetrahydro-2H-pyran-2,5-diyl bis(4-nitrobenzoate) (CAS 177650-91-8)
- N-(4-Chloro-2-methoxy-5-methylphenyl)-2-((4-(4-chlorophenyl)-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 476484-50-1)
- Sofosbuvir (CAS 1190307-88-0)
- N-((4-(4-Bromophenyl)-5-((2-oxo-2-(thiazol-2-ylamino)ethyl)thio)-4H-1,2,4-triazol-3-yl)methyl)benzamide (CAS 393839-52-6)
- Clarithromycin impurity 14 (CAS 138109-92-9)
- Carbocisteine Impurity 3 (CAS 88620-38-6)
- Bortezomib Impurity 11 (CAS CATO-C4X-107211)
- 5-Bromo-2-(pyridin-4-yl)pyrimidin-4-amine (CAS 1381941-03-2)
- (2R)-2-amino-2-benzo[d]furan-2-ylethan-1-ol (CAS 1213829-91-4)
- 1-Methyl-2-(naphthalen-1-yl)-1H-indole-3-carbonitrile (CAS 1322697-72-2)
- 1-Bromo-3-methylbutane D7 (CAS 1795011-78-7)
- Boc-Gln-Arg-Arg-AMC (CAS 109376-05-8)
- 6-(Bromomethyl)-1-fluoronaphthalene (CAS 70631-38-8)
- Semaglutide impurity 29 (CAS 110990-08-4)
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