Prednisone Impurity 7 CAS CATO-C4X-16947
| CAS No. | CATO-C4X-16947 |
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Prednisone Impurity 7 (CAS CATO-C4X-16947, C21H26O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C21H26O5, Prednisone Impurity 7 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 358.43 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).
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.
CATO manufactures Prednisone Impurity 7 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Prednisone Standards
- Prednisone (CAS 53-03-2)
- Prednisone Impurity 16 (CAS 15714-29-1)
- Prednisone EP Impurity C (CAS 70522-55-3)
- Prednisone-d4 (Major) (CAS CATO-CCAD303314)
- Prednisone-d7 (Major) (CAS CATO-C4X-191926)
- Prednisone-d8 (CAS CATO-C4X-191927)
- Prednisone-d8 (CAS CATO-CCAD300850)
- Prednisone Impurity 12 (CAS CATO-C4X-169412)
Recommended Standards
- Formoterol Impurity 89 (CAS CATO-C4X-152589)
- Prednisolone EP Impurity H (CAS 2427-64-7)
- Formoterol EP Impurity E (CAS 1616967-26-0)
- Ticarcillin EP Impurity E (CAS CATO-C4X-17635)
- Finerenone Impurity 136 (CAS CATO-C4X-2880136)
- Fasudil Impurity 24 (CAS CATO-C4X-136524)
- Bempedoic Acid Impurity 27 (CAS 738606-42-3)
- D-Fructose-6-phosphate (disodium hydrate) (CAS 918149-30-1)
- 2-(4-Hydroxyphenyl)isonicotinic acid (CAS 1258626-91-3)
- 1-(3-Methoxybenzyl)azetidin-3-ol (CAS 111043-53-9)
- Cesium 1-(tert-butoxycarbonyl)piperidine-4-carboxylate (CAS 848865-23-6)
- 2-(2,6-Dioxopiperidin-3-yl)-5-methylisoindoline-1,3-dione (CAS 40313-92-6)
- 1-(2-fluoro-4-nitrophenyl)-1H-pyrazol-3-amine (CAS 266327-62-2)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com