Candesartan Cilexetil EP Impurity B CAS 869631-11-8
| CAS No. | 869631-11-8 |
| Molecular Formula | C31H30N6O6 |
| Molecular Weight | 582.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Candesartan Cilexetil EP Impurity B (C31H30N6O6) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Candesartan Cilexetil EP Impurity B (CAS 869631-11-8) is a certified pharmaceutical impurity reference standard with the molecular formula C31H30N6O6 and a molecular weight of 582.61 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.
CATO manufactures Candesartan Cilexetil EP Impurity B under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C31H30N6O6 |
| Molecular Weight | 582.61 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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.) | 1987 |
| Nitrogen Atoms | 6 |
Related Candesartan Standards
- Candesartan Cilexetil Methoxy Analog (CAS 1026042-12-5)
- Candesartan Impurity 5 (CAS 897629-28-6)
- Candesartan Impurity 6 (CAS CATO-C4X-15726)
- Candesartan Cilexetil Impurity 18 (CAS CATO-C4X-123418)
- Candesartan Impurity 9 (CAS CATO-C4X-15729)
- Candesartan Cilexetil Impurity 45 (CAS 1821385-89-0)
- Candesartan Cilexetil (CAS 145040-37-5)
- Candesartan Cilexetil EP Impurity C (CAS 1185255-99-5)
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- D-Phe22-Tirzepatide (CAS CATO-CPTD788912)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com