Fluorometholone Impurity 7 CAS 2796-99-8
| CAS No. | 2796-99-8 |
| Molecular Formula | C23H31FO7S |
| Molecular Weight | 470.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Fluorometholone Impurity 7 (CAS 2796-99-8) is a certified pharmaceutical impurity reference standard with the molecular formula C23H31FO7S and a molecular weight of 470.55 g/mol.
Based on its molecular formula C23H31FO7S, Fluorometholone Impurity 7 contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 470.55 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.
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.
Physical & Chemical Properties
| Molecular Formula | C23H31FO7S |
| Molecular Weight | 470.55 g/mol |
| 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 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Fluorometholone Standards
- Fluorometholone Impurity 11 (CAS CATO-C4X-193311)
- Fluorometholone Impurity 6 (CAS 110664-58-9)
- Fluorometholone Acetate (CAS 3801-06-7)
- Fluorometholone Epoxy Analog (CAS 83873-17-0)
- Fluorometholone Impurity N12 (CAS 382-52-5)
- Fluorometholone Impurity 8 (CAS CATO-C4X-19338)
- Fluorometholone Impurity 2 (CAS 130145-14-1)
- Fluorometholone Acetate 6,9(11)-diene Impurity (CAS 95955-20-7)
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