Dexamethasone Impurity 88 CAS CATO-C4X-116588
| CAS No. | CATO-C4X-116588 |
| Molecular Formula | C28H41FO10 |
| Molecular Weight | 556.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Dexamethasone Impurity 88 (CAS CATO-C4X-116588) is a certified pharmaceutical impurity reference standard with the molecular formula C28H41FO10 and a molecular weight of 556.62 g/mol.
Dexamethasone Impurity 88 (C28H41FO10) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C28H41FO10 |
| Molecular Weight | 556.62 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Dexamethasone Standards
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Recommended Standards
- Atorvastatin Impurity 94 (CAS 163217-70-7)
- 1,1'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))bis(naphthalen-2-ol) (CAS 21708-77-0)
- Atorvastatin Impurity 93 (CAS 163217-74-1)
- Pexmetinib (CAS 945614-12-0)
- Vonoprazan Impurity 129 (CAS 109-00-2)
- Diclofenac acid Impurity 59 (CAS 304884-75-1)
- Avibactam impurity 106 (CAS CATO-C4X-1348106)
- 5-Methyl-N-(2-morpholinophenyl)-1-(4-nitrophenyl)-1H-1,2,4-triazole-3-carboxamide (CAS 400078-02-6)
- 2-((4-(2-Chlorophenyl)-6-(4-chlorophenyl)-3-cyanopyridin-2-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 332372-39-1)
- 3-(5-Bromo-1-methyl-1H-indol-3-yl)-4-(benzofuran-3-yl)pyrrole-2,5-dione (CAS 941575-71-9)
- Ethyl 4-amino-1-methylpiperidine-4-carboxylate (CAS 141652-75-7)
- 4-Fluoro-N-(2-(imidazo[1,2-a]pyridin-2-yl)ethyl)benzenesulfonamide (CAS 868978-56-7)
- Afatinib Impurity 8 (CAS CATO-C4X-10068)
- Peptide 439 (CAS CATO-CPTD788439)
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