Flumetasone Impurity 7 CAS 61633-73-6
| CAS No. | 61633-73-6 |
| Molecular Formula | C26H34F2O5 |
| Molecular Weight | 464.54 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.
Flumetasone Impurity 7 (CAS 61633-73-6) is a certified pharmaceutical impurity reference standard with the molecular formula C26H34F2O5 and a molecular weight of 464.54 g/mol.
Structurally, Flumetasone Impurity 7 (C26H34F2O5) contains a steroid core, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 464.54 g/mol, it falls into the moderately-high-molecular-weight range. 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), Flumetasone Impurity 7 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 | C26H34F2O5 |
| Molecular Weight | 464.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | F-containing |
Related Flumetasone Standards
- Flumetasone Impurity 14 (CAS 3873-19-6)
- Flumetasone Pivalate EP Impurity C (CAS 1926-94-9)
- Flumetasone Impurity 9 (CAS 2541-37-9)
- Flumetasone Impurity 8 (CAS CATO-C4X-19108)
- Flumetasone Impurity 16 (CAS CATO-C4X-191016)
- Flumetasone Impurity 17 (CAS CATO-C4X-191017)
- Flumetasone Impurity 10 (CAS 382631-11-0)
- Flumetasone Impurity 19 (CAS CATO-C4X-191019)
Recommended Standards
- Flupentixol Impurity 16 (CAS CATO-C4X-189516)
- Garcinone E (CAS 112649-21-5)
- Lubiprostone impurity 8 (CAS 136790-79-9)
- HO-3867 (CAS 1172133-28-6)
- Iopamidol EP Impurity B (CAS 77868-41-8)
- Lumateperone Impurity 49 (CAS CATO-C4X-220149)
- Prasterone Impurity 16 (CAS CATO-C4X-19216)
- [6-Cit]Cetrorelix (CAS CATO-C4X-201451)
- 1-Ethyl-N-isopentyl-1H-pyrazol-4-amine hydrochloride (CAS 1856091-35-4)
- 2-{[(5-chlorothiophen-2-yl)methyl]amino}acetic acid hydrochloride (CAS 1375473-06-5)
- (4-Aminophenyl)(phenyl)methanol (CAS 25782-57-4)
- Dofequidar (CAS 129716-58-1)
- Ethyl (3-nitrophenyl)carbamate (CAS 6275-72-5)
- Tirzepatide Impurity 24 X TFA Salt (CAS CATO-C4X-324024)
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