Flomoxef Impurity 8 CAS CATO-C4X-13828
| CAS No. | CATO-C4X-13828 |
| Molecular Formula | C16H19F2N5O7S2 |
| Molecular Weight | 495.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H19F2N5O7S2, Flomoxef Impurity 8 contains a flavonoid core, an amide group, 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 495.48 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).
Flomoxef Impurity 8 (CAS CATO-C4X-13828) is a certified pharmaceutical impurity reference standard with the molecular formula C16H19F2N5O7S2 and a molecular weight of 495.48 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 | C16H19F2N5O7S2 |
| Molecular Weight | 495.48 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; 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 | F-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Flomoxef Standards
- Flomoxef Impurity 14 (CAS CATO-C4X-138214)
- Flomoxef (CAS 99665-00-6)
- Flomoxef Impurity 40 (CAS CATO-C4X-138240)
- Flomoxef Impurity 42 (CAS CATO-C4X-138242)
- Flomoxef Impurity 65 (CAS CATO-C4X-138265)
- Flomoxef Impurity 56 (CAS CATO-C4X-138256)
- Flomoxef Impurity 52 (CAS CATO-C4X-138252)
- Flomoxef Impurity 29 (CAS 2095697-75-7)
Recommended Standards
- Boc-Ala-Ala-Asp-pNA (CAS 201732-83-4)
- rel-(4R,5S)-4,5-Bis(4-chlorophenyl)-2-[4-(1,1-dimethylethyl)-2-ethoxyphenyl]-4,5-dihydro-4,5-dimethyl-1H-imidazole (CAS 939981-35-8)
- 5-Cyclohexylideneimidazolidine-2,4-dione (CAS 66872-77-3)
- Spironolactone EP Impurity B (CAS CATO-C4X-13452)
- Delafloxacin Impurity 30 (CAS CATO-C4X-263730)
- Nifuroxazide EP Impurity C (CAS 92-55-7)
- Ambroxol Impurity 24 (CAS CATO-C4X-108524)
- 7-Amino-5-methyl-[1,2,5]oxadiazolo[3,4-b]pyridine-6-carboxylic acid (CAS 2179277-99-5)
- Brexpiprazole Impurity 84 (CAS CATO-C4X-113184)
- 3-Ethoxy-2-methyl-3-oxopropanoic acid (CAS 2985-33-3)
- 6-Amino-5-bromo-3-chloropicolinic acid (CAS 2010955-37-8)
- 2-Amino-N-(2-hydroxyethyl)-N-methylpropanamidehydrochloride (CAS 1236265-30-7)
- 3-(Phenylthio)-N-(tetrahydro-2H-pyran-4-yl)-N-(2-(thiophen-2-yl)ethyl)propanamide (CAS 1795492-20-4)
- (D-Ala1)-Peptide T amide (CAS 106362-34-9)
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