Prednisolone Impurity 32 CAS CATO-C4X-173732
| CAS No. | CATO-C4X-173732 |
| Molecular Formula | C23H26O6 |
| Molecular Weight | 398.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Prednisolone Impurity 32 is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Prednisolone Impurity 32 (CAS CATO-C4X-173732) is a certified pharmaceutical impurity reference standard with the molecular formula C23H26O6 and a molecular weight of 398.45 g/mol.
Based on its molecular formula C23H26O6, Prednisolone Impurity 32 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 398.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Prednisolone Impurity 32 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 | C23H26O6 |
| Molecular Weight | 398.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Prednisolone Standards
- Prednisolone Impurity 34 (CAS CATO-C4X-173734)
- Prednisolone Impurity 28 (CAS 95440-71-4)
- Prednisolone Impurity 41 (CAS CATO-C4X-173741)
- Prednisolone impurity 60 (CAS CATO-C4X-173760)
- Prednisolone Impurity 42 (CAS 3597-59-9)
- Prednisolone Acetate (CAS 52-21-1)
- Prednisolone 17-Acetate (CAS 52628-64-5)
- Prednisolone impurity 58 (CAS 19357-45-0)
Recommended Standards
- Prednisone Impurity 11 (CAS 2601-23-2)
- Budesonide impurity 44 (CAS CATO-C4X-138944)
- (R)-Olodaterol Impurity 4 (CAS CATO-C4X-19434)
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- Tenofovir disoproxil Impurity 55 (CAS 180587-75-1)
- Difenacoum Impurity 2 (CAS 56181-65-8)
- Tirofiban Impurity 123 HCl (CAS CATO-C4X-1254123)
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