Budesonide impurity 41 CAS CATO-C4X-138941
| CAS No. | CATO-C4X-138941 |
| Molecular Formula | C21H28O6 |
| Molecular Weight | 376.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Budesonide impurity 41 (CAS CATO-C4X-138941, C21H28O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H28O6, Budesonide impurity 41 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 376.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 impurity 41 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 | C21H28O6 |
| Molecular Weight | 376.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Budesonide Standards
- Budesonide EP Impurity A (CAS 13951-70-7)
- Budesonide Impurity 35 (CAS 3079028-41-1)
- Budesonide impurity 59 (CAS 34647-56-8)
- Budesonide Impurity 80 (CAS CATO-C4X-138980)
- Budesonide Impurity 01 (CAS 1188271-73-9)
- Budesonide Impurity 33 (CAS 131918-73-5)
- Budesonide Impurity N20 (CAS 3754-05-0)
- Budesonide Impurity 34 (CAS 1171-81-9)
Recommended Standards
- Octahydrocurcumin (CAS 36062-07-4)
- Prednisolone EP Impurity D (CAS 16355-29-6)
- Hydrocortisone 21-Carboxylic Acid (CAS 57172-48-2)
- Prednisolone EP Impurity E (CAS 95815-58-0)
- Pyridoxine /Vitamin B6 Impurity 44 HCl (CAS 221624-94-8(free base))
- Niraparib Impurity 43 (CAS CATO-C4X-232943)
- Quinapril EP Impurity G (CAS 103833-16-5)
- 1,3-Dimethyl-5-nitrobenzimidazol-2(3H)-one (CAS 43027-50-5)
- 2-(1-(tert-Butoxycarbonyl)piperidin-4-yl)propanoic acid (CAS 815593-60-3)
- 3-(4-Isopropoxyphenyl)acrylic acid (CAS 20718-97-2)
- 1-(2-((2,3-Dichlorophenyl)(methyl)amino)thiazol-5-yl)ethan-1-one (CAS 1208907-43-0)
- (3-Aminopyrrolidin-1-yl)(o-tolyl)methanone hydrochloride (CAS 1583686-05-8)
- 2-Cyclopropylimidazole (CAS 89532-38-7)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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