Candesartan Cilexetil EP Impurity C CAS 1185255-99-5
| CAS No. | 1185255-99-5 |
| Molecular Formula | C33H34N6O6 |
| Molecular Weight | 610.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Candesartan Cilexetil EP Impurity C (C33H34N6O6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Candesartan Cilexetil EP Impurity C (CAS 1185255-99-5, C33H34N6O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Candesartan Cilexetil EP Impurity C 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 | C33H34N6O6 |
| Molecular Weight | 610.66 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 6 |
Related Candesartan Standards
- Candesartan Cilexetil (CAS 145040-37-5)
- Candesartan Cilexetil EP Impurity D (CAS 1185256-03-4)
- Candesartan Cilexetil Impurity 45 (CAS 1821385-89-0)
- Candesartan N2-Glucuronide (CAS 180603-76-3)
- Candesartan Impurity 6 (CAS CATO-C4X-15726)
- Candesartan Cilexetil Methoxy Analog (CAS 1026042-12-5)
- Candesartan Cilexetil EP Impurity B (CAS 869631-11-8)
- Candesartan Cilexetil EP Impurity E (CAS 914613-35-7)
Recommended Standards
- Fmoc-β-Ala-Hyp（Boc）-OH (CAS CATO-CPTD788459)
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- Trazodone Impurity 43 (CAS CATO-C4X-177243)
- Trelagliptin Impurity 50 (CAS CATO-C4X-104650)
- Avatrombopag Impurity 116 (CAS CATO-C4X-2234116)
- Fingolimod Impurity 18 (CAS 1068-90-2)
- 2-Amino-N-(2,3-dichlorobenzyl)-N-methylacetamide (CAS 1179904-56-3)
- 3-(Benzyloxy)-1H-pyrrole-2-carbonitrile (CAS 61893-87-6)
- 2-Bromo-6-(difluoromethyl)-5-methoxynicotinonitrile (CAS 1805399-21-6)
- N1-(4-chloro-2-nitrophenyl)ethane-1,2-diamine hydrochloride (CAS 1049728-18-8)
- 2-Cyano-3-methylpyridine 1-oxide (CAS 159727-88-5)
- Semaglutide Impurity 144 (CAS 394210-59-4)
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