Fluconazole Impurity 75 CAS CATO-C4X-101975
| CAS No. | CATO-C4X-101975 |
| Molecular Formula | C24H21F4N9O2 |
| Molecular Weight | 543.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 543.48 g/mol gives Fluconazole Impurity 75 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Fluconazole Impurity 75 (CAS CATO-C4X-101975) is a certified pharmaceutical impurity reference standard with the molecular formula C24H21F4N9O2 and a molecular weight of 543.48 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Fluconazole Impurity 75 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 543.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C24H21F4N9O2 |
| Molecular Weight | 543.48 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 47 (CAS CATO-C4X-101947)
- Fluconazole Impurity 55 (CAS CATO-C4X-101955)
- 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
- 1-(2,4-Dinitrophenyl)-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-histidine (CAS 83999-94-4)
- Pantoprazole Impurity 77 (CAS 867300-67-2)
- 6,7-Dichloro-1,4-bis(mesitylamino)anthracene-9,10-dione (CAS 18038-98-7)
- Niraparib Impurity 46 (CAS CATO-C4X-232946)
- Tenofovir alafenamide Impurity 92 (CAS CATO-C4X-179792)
- Melitracen Impurity 13 (CAS 71264-79-4)
- Difelikefalin Impurity 23 Trifluoroacetic acid (CAS CATO-C4X-304123)
- 7-Acetoxy-6-methoxy-3,4-dihydroquinazolin-4-one (CAS 179688-02-9)
- 3-Ethyl-1-methyl-2-phenyl-1H-indole (CAS 95503-21-2)
- (5-(Methoxymethyl)oxazol-4-yl)methanamine (CAS 1510108-34-5)
- Tert-butyl 3-(cyclopropylamino)-8-azabicyclo[3.2.1]Octane-8-carboxylate (CAS 1305235-96-4)
- Methyl 2-methyl-4-oxo-3,4-dihydroquinazoline-7-carboxylate (CAS 1016681-63-2)
- 5-Boc-4,5,6,7-Tetrahydropyrazolo[4,3-c]pyridine (CAS 230301-11-8)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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