Budesonide Impurity 77 CAS CATO-C4X-138977
| CAS No. | CATO-C4X-138977 |
| Molecular Formula | C24H32O7 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Budesonide Impurity 77.
As a process- or degradation-related impurity, Budesonide Impurity 77 (CAS CATO-C4X-138977, C24H32O7C24H30O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Budesonide Impurity 77 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 847.01 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).
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.
As a certified reference material (CRM), Budesonide Impurity 77 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 | C24H32O7 C24H30O6 |
| Molecular Weight | 847.01 g/mol |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Budesonide Standards
- Budesonide EP Impurity B（Mixture of diastereomers） (CAS 1040085-98-0)
- Budesonide EP Impurity C (CAS 1040085-99-1)
- Budesonide Δ-6 Impurity (CAS 109458-75-5)
- Budesonide-d8 (Mixture of Diastereomers) (CAS 1105542-94-6)
- Budesonide Impurity 50 (CAS 111668-12-3)
- Budesonide d6 (CAS 1134189-63-1)
- Budesonide EP Impurity I (CAS 113930-13-5)
- Budesonide Impurity 34 (CAS 1171-81-9)
Recommended Standards
- Cefixime Impurity 99 (CAS CATO-C4X-113999)
- Nafamostat impurity 100 (CAS CATO-C4X-1332100)
- Tizanidine Impurity 44 (CAS 13907-88-5)
- 3-(2-methylpropyl)piperidine-2,6-dione (CAS 1341348-16-0)
- Methyl 2-methyl-1H-pyrrolo[2,3-c]pyridine-3-carboxylate (CAS 1450662-01-7)
- Ethyl 2-(3-fluoro-4-methylphenyl)-2-oxoacetate (CAS 732251-65-9)
- 7-Phenyl-14-(p-tolyl)-5,6,8,9-tetrahydrodibenzo[c,h]acridin-14-ium trifluoromethanesulfonate (CAS 76017-77-1)
- 6-(Naphthalen-1-yl)pyridazin-3-ol (CAS 1105194-30-6)
- 4-Chlorothieno[2,3-c]pyridine (CAS 477874-92-3)
- Semaglutide Impurity 8 (CAS CATO-C4X-22268)
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