Celiprolol EP Impurity G CAS 56980-98-4
| CAS No. | 56980-98-4 |
| Molecular Formula | C16H22N2O4 |
| Molecular Weight | 306.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Celiprolol EP Impurity G (CAS 56980-98-4, C16H22N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Celiprolol EP Impurity G is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 306.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Celiprolol EP Impurity G 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 | C16H22N2O4 |
| Molecular Weight | 306.36 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 2 |
Related Celiprolol Standards
- Celiprolol Hydrochloride EP Impurity A (CAS 56980-94-0)
- Celiprolol Hydrochloride EP Impurity F (CAS 79881-89-3)
- (R)-Celiprolol (CAS 91878-52-3)
- (S)-Celiprolol (CAS 95586-73-5)
- Celiprolol Hydrochloride EP Impurity C (CAS 57471-01-9)
- Celiprolol (CAS 56980-93-9)
- Celiprolol Hydrochloride EP Impurity H (CAS 85045-98-3)
- Celiprolol Impurity 9 (CAS CATO-C4X-24549)
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