Ketoprofen Impurity 54 CAS CATO-C4X-147154
| CAS No. | CATO-C4X-147154 |
| Molecular Formula | C20H23NO5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ketoprofen Impurity 54 (C20H23NO5HCl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Ketoprofen Impurity 54 (CAS CATO-C4X-147154) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23NO5HCl and a molecular weight of 393.86 g/mol.
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.
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 | C20H23NO5 HCl |
| Molecular Weight | 393.86 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Ketoprofen Standards
- Ketoprofen EP Impurity D (CAS 107257-20-5)
- Ketoprofen Impurity 35 (CAS 108315-48-6)
- Ketoprofen Impurity 23 (CAS 1092395-13-5)
- Ketoprofen-13C-d3 (CAS 1189508-77-7)
- Ketoprofen-d3 Methyl Ester (CAS 1189950-12-6)
- Ketoprofen-13CD3 Methyl Ester (CAS 1190007-27-2)
- (±)-Ketoprofen-d4 (propionic-d4 acid) (CAS 1219805-29-4)
- Ketoprofen Impurity N6 (CAS 1257296-76-6)
Recommended Standards
- Desmopressin Impurity 39 (CAS CATO-C4X-221539)
- Netilmicin EP Impurity B (CAS 67666-41-5)
- Roxadustat Impurity 48 (CAS CATO-C4X-221348)
- 4-[(2,4-dimethoxyphenyl)methyl]-7-oxa-4-azaspiro[2.5]octane (CAS 1803598-51-7)
- Telmisartan EP Impurity J (CAS 885045-90-9)
- 3,5-Bis-(thiophene-2-sulfonylamino)-benzoic acid methyl ester (CAS 380344-13-8)
- 5-(tert-Butyl)-2-(3-fluoropyridin-4-yl)benzo[d]oxazole (CAS 1192019-91-2)
- Phenoxybenzamine EP Impurity A (CAS 902273-13-6)
- 1-(2-Cyclohexylethyl)piperazine (CAS 132800-12-5)
- a2,3-Sialylglycopeptide (CAS 189035-43-6)
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