Fexofenadine Impurity 41 CAS 1795786-25-2
| CAS No. | 1795786-25-2 |
| Molecular Formula | C30H43NO4 |
| Molecular Weight | 481.67 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 Fexofenadine Impurity 41.
As a process- or degradation-related impurity, Fexofenadine Impurity 41 (CAS 1795786-25-2, C30H43NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Fexofenadine Impurity 41 (C30H43NO4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 481.67 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), Fexofenadine Impurity 41 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 | C30H43NO4 |
| Molecular Weight | 481.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
Related Fexofenadine Standards
- Fexofenadine Impurity 23 (CAS 1208313-13-6)
- Fexofenadine Impurity 16 (CAS CATO-C4X-179416)
- Fexofenadine Impurity 17 (CAS CATO-C4X-179417)
- Fexofenadine EP Impurity G (CAS 1187954-57-9)
- Fexofenadine Impurity 11 (CAS 1347311-10-7)
- Fexofenadine EP Impurity F (CAS 185066-33-5)
- Fexofenadine Impurity 15 (CAS CATO-C4X-179415)
- Fexofenadine EP Impurity A (CAS 76811-98-8)
Recommended Standards
- 6,7-Dimethoxy-3-octyl-2-((2,4,6-trimethylbenzyl)thio)quinazolin-4(3H)-imine (CAS 860789-49-7)
- Fesoterodine Impurity 4 (CAS 250214-55-2)
- tert-Butyl 2-{[(tert-Butyldiphenylsilyl)oxy]methyl}-4-formylpiperidine-1-carboxylate (CAS 1630906-46-5)
- N,4-Bis(1-phenylethyl)-N-(4-(1-phenylethyl)phenyl)aniline (CAS 93920-04-8)
- Furosemide Impurity 25 (CAS CATO-C4X-140235)
- Osimertinib Impurity 67 (CAS CATO-C4X-204567)
- Moxidectin EP Impurity I (CAS 113463-31-3)
- 1-Methoxy-3-propylbenzene (CAS 62103-69-9)
- Methyl 6-chloro-4-hydroxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylate (CAS 909911-74-6)
- 1-Chloro-4,4-dimethylpentane (CAS 75431-23-1)
- Tedizolid Impurity 55 (CAS 919081-42-8)
- 1-Allyl-2-((4-fluorobenzyl)thio)-4,5-diphenyl-1H-imidazole (CAS 339277-62-2)
- 1-(Pyridin-4-yl)pentane-1,3-dione (CAS 17784-54-2)
- Tau Peptide (401-411)-Lys-Lys trifluoroacetate salt (CAS 2022956-59-6)
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