Budesonide EP Impurity G（monomer） CAS CATO-C4X-138924
| CAS No. | CATO-C4X-138924 |
| Molecular Formula | C25H36O6 |
| Molecular Weight | 432.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Budesonide EP Impurity G（monomer） (C25H36O6) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 432.55 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).
As a process- or degradation-related impurity, Budesonide EP Impurity G（monomer） (CAS CATO-C4X-138924, C25H36O6) 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), Budesonide EP Impurity G（monomer） 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 | C25H36O6 |
| Molecular Weight | 432.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Budesonide Standards
- Budesonide EP Impurity G (Mixture of Epimer) (CAS 137174-25-5)
- Budesonide impurity 42 (CAS CATO-C4X-138942)
- Budesonide Impurity 29 (CAS 51372-28-2)
- Budesonide EP Impurity C (CAS 1040085-99-1)
- Budesonide Impurity 48 (CAS 84197-04-7)
- Budesonide Impurity 73 (CAS CATO-C4X-138973)
- Budesonide Impurity 75 (CAS CATO-C4X-138975)
- Budesonide (CAS 51333-22-3)
Recommended Standards
- Simvastatin Impurity 8 (CAS 130468-11-0)
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- Terbutaline Impurity 82 (CAS CATO-C4X-118382)
- Doxycycline EP Impurity D (CAS 97583-08-9)
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