Budesonide Impurity 53 CAS CATO-C4X-138953
| CAS No. | CATO-C4X-138953 |
| Molecular Formula | C29H38O7 |
| Molecular Weight | 498.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Budesonide Impurity 53 (CAS CATO-C4X-138953) is a certified pharmaceutical impurity reference standard with the molecular formula C29H38O7 and a molecular weight of 498.61 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Budesonide Impurity 53 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 498.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 certified reference material (CRM), Budesonide Impurity 53 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 | C29H38O7 |
| Molecular Weight | 498.61 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Budesonide Standards
- Budesonide Impurity 71 (CAS 91160-87-1)
- Budesonide Impurity 40 (CAS 91160-89-3)
- Budesonide Impurity 72 (CAS CATO-C4X-138972)
- Budesonide Impurity 28 (Mixture of Diastereomers) (CAS 2408495-96-3)
- Budesonide impurity 43 (CAS CATO-C4X-138943)
- Budesonide Impurity 51 (CAS CATO-C4X-138951)
- Budesonide Impurity 62 (CAS CATO-C4X-138962)
- Budesonide Impurity 69 (CAS CATO-C4X-138969)
Recommended Standards
- Abiraterone 3-Nitrobenzoate Impurity (CAS CATO-C4X-107071)
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