Mometasone Impurity 47 CAS 223776-47-4
| CAS No. | 223776-47-4 |
| Molecular Formula | C23H30O7S |
| Molecular Weight | 450.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Mometasone Impurity 47 (CAS 223776-47-4) is a certified pharmaceutical impurity reference standard with the molecular formula C23H30O7S and a molecular weight of 450.55 g/mol.
Structurally, Mometasone Impurity 47 (C23H30O7S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. 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 450.55 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).
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 | C23H30O7S |
| Molecular Weight | 450.55 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Sulfur Atoms | 1 |
Related Mometasone Standards
- Mometasone Furoate EP Impurity O (CAS 24916-91-4)
- Mometasone Impurity 33 (CAS CATO-C4X-170433)
- Mometasone Impurity 50 (CAS 23776-75-2)
- Mometasone Impurity C84 (CAS 722495-06-9)
- Mometasone Furoate EP Impurity A (CAS 83880-65-3)
- Mometasone Impurity 28 (CAS CATO-C4X-170428)
- Mometasone Furoate EP Impurity G (CAS 105102-22-5)
- Mometasone Impurity 49 (CAS CATO-C4X-170449)
Recommended Standards
- Aztreonam impurity 85 (CAS CATO-C4X-152285)
- N-(1-Isopropyl-3-(1-methylindolin-6-yl)-1H-pyrrolo[2,3-b]pyridin-4-yl)-1-methyl-1H-pyrazole-3-sulfonamide (CAS 1415925-18-6)
- Tirofiban Impurity 12 (CAS CATO-C4X-125412)
- Bis-PEG6-t-butyl ester (CAS 439114-12-2)
- Lifitegrast Impurity 123 (CAS CATO-C4X-2409123)
- Labetalol Impurity 59 (CAS CATO-C4X-246659)
- Emedastine EP Impurity F 2HCl (CAS CATO-C4X-22676)
- 1-amino-3,3-difluoro-cyclobutanecarboxylic acid (CAS 1225532-86-4)
- 1-(2-Cyclopropyl-6-ethylpyrimidin-4-yl)piperidin-4-amine (CAS 1707399-85-6)
- 1-(2,6-Dibromo-4-methoxyphenyl)ethanone (CAS 74746-05-7)
- Methyl 3-(2-(2-oxo-2-(pyrrolidin-1-yl)acetyl)-1H-pyrrol-1-yl)benzo[b]thiophene-2-carboxylate (CAS 477863-37-9)
- 1-(2,2-Difluorovinyl)-4-methoxybenzene (CAS 1608-24-8)
- 2-Hydroxy-3-(piperidin-1-yl)-1,3-di-p-tolylpropan-1-one (CAS 866049-62-9)
- Hippocampal Cholinergic Neurostimulating Peptide (CAS 140158-49-2)
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