Oteseconazole Impurity 4 CAS CATO-C4X-33374
| CAS No. | CATO-C4X-33374 |
| Molecular Formula | C23H15F6N5O2 |
| Molecular Weight | 507.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Oteseconazole Impurity 4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 507.40 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.
Oteseconazole Impurity 4 (CAS CATO-C4X-33374) is a certified pharmaceutical impurity reference standard with the molecular formula C23H15F6N5O2 and a molecular weight of 507.40 g/mol.
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.
As a certified reference material (CRM), Oteseconazole Impurity 4 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C23H15F6N5O2 |
| Molecular Weight | 507.40 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
Related Oteseconazole Standards
Recommended Standards
- Mometasone Furoate Impurity 19 (CAS 1404070-67-2)
- (S)-3,3'-Bis(4-chlorophenyl)-[1,1'-binaphthalene]-2,2'-diol (CAS 1204609-08-4)
- Lusutrombopag Impurity 56 (CAS CATO-C4X-208456)
- (1R)-3,3'-Bis(4-chlorophenyl)[1,1'-binaphthalene]-2,2'-diol (CAS 851615-05-9)
- Voclosporin Impurity 2 (CAS CATO-C4X-30652)
- Tropisetron Impurity 2 (CAS CATO-C4X-11792)
- Landiolol Impurity 32 (CAS CATO-C4X-262132)
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- Dalbavancin Impurity 23 (CAS CATO-C4X-160223)
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- 4-Methyltetrahydro-2H-thiopyran-4-amine (CAS 851510-68-4)
- 4-Amino-6-cyano-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride (CAS 1806001-01-3)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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