Flurbiprofen Impurity 74 CAS CATO-C4X-144474
| CAS No. | CATO-C4X-144474 |
| Molecular Formula | C5H9BrO3 |
| Molecular Weight | 197.03 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.
Flurbiprofen Impurity 74 (CAS CATO-C4X-144474) is a certified pharmaceutical impurity reference standard with the molecular formula C5H9BrO3 and a molecular weight of 197.03 g/mol.
Based on its molecular formula C5H9BrO3, Flurbiprofen Impurity 74 contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 197.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H9BrO3 |
| Molecular Weight | 197.03 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| Halogen Content | Br-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 163 (CAS 374936-00-2)
- Flurbiprofen Impurity 12 (CAS 55258-76-9)
- Flurbiprofen Impurity 82 (CAS 37847-52-2)
- Flurbiprofen Impurity 9 (CAS 477860-13-2)
- Flurbiprofen Impurity 44 (CAS CATO-C4X-144444)
- Flurbiprofen Impurity 85 (CAS CATO-C4X-144485)
- Flurbiprofen Impurity N1 (CAS 81937-33-9)
- Flurbiprofen Impurity 61 (CAS 95037-98-2)
Recommended Standards
- 8-Bromoimidazo[1,2-a]pyridine (CAS 850349-02-9)
- (E)-3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)acrylamide (CAS 1228646-19-2)
- 7-Bromoimidazo[1,2-a]pyridine (CAS 808744-34-5)
- 4,5-Dichlorothiophene-3-carboxylic acid (CAS 123418-70-2)
- Podophyllotoxin impurity 5 (CAS 1174-97-6)
- Risperidone EP Impurity M (CAS 84163-77-9)
- Dopamine Impurity 45 (CAS 637-26-3)
- Rel-((2S,3aS,6aS)-hexahydro-2H-furo[2,3-c]pyrrol-2-yl)methanol hydrochloride (CAS 2095192-24-6)
- 1-(2-Fluoro-3-(trifluoromethyl)phenyl)ethanone (CAS 207853-63-2)
- 2-(2-(Trifluoromethyl)phenyl)propan-1-ol (CAS 1481780-36-2)
- (-)-1,2-Bis((2R,5R)-2,5-diphenylphospholano)ethane 1,2-bis((2R,5R)-2,5-diphenylphospholan-1-yl)ethane 528565-79-9 (CAS 528565-79-9)
- Methyl 1,2-dihydroquinoline-3-carboxylate (CAS 916908-77-5)
- 7-Phenyl-1,4-thiazepan-5-one (CAS 2897-03-2)
- Crustacean Cardioactive Peptide (CAS 107090-96-0)
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