Flucloxacillin impurity 11 CAS CATO-C4X-164711
| CAS No. | CATO-C4X-164711 |
| Molecular Formula | C19H17ClFN3O6S |
| Molecular Weight | 469.87 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Flucloxacillin impurity 11 (CAS CATO-C4X-164711) is a certified pharmaceutical impurity reference standard with the molecular formula C19H17ClFN3O6S and a molecular weight of 469.87 g/mol.
Based on its molecular formula C19H17ClFN3O6S, Flucloxacillin impurity 11 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 469.87 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).
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 | C19H17ClFN3O6S |
| Molecular Weight | 469.87 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Flucloxacillin Standards
- Flucloxacillin impurity 8 (CAS CATO-C4X-16478)
- Flucloxacillin EP Impurity D Potassium salt (CAS 83817-49-6)
- Flucloxacillin EP Impurity A (CAS CATO-C4X-164715)
- Flucloxacillin Impurity 7 (CAS 42947-70-6)
- Flucloxacillin - API Standards (CAS 5250-39-5)
- Flucloxacillin impurity 12 (CAS CATO-C4X-164712)
- Flucloxacillin Monohydrate EP Impurity I (CAS CATO-C4X-164719)
- Flucloxacillin impurity 6 (CAS CATO-C4X-16476)
Recommended Standards
- 5-Hydroxymethyl Flucloxacillin (CAS 75524-31-1)
- 5-{benzyl[3-(trifluoromethyl)phenyl]sulfamoyl}-2-chlorobenzoic acid (CAS 722464-39-3)
- 2-(4-Chlorophenyl)-4-(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)-6-(pyridin-2-yl)tetrahydropyrrolo[3,4-c]pyrrole-1,3(2H,3aH)-dione (CAS 321392-13-6)
- 4-Chlorophenyl 2-{N-[3-(trifluoromethyl)phenyl]benzenesulfonamido}acetate (CAS 343373-84-2)
- Docetaxel Impurity 21 (CAS 151636-78-1)
- Delgocitinib impurity N1 (CAS 2064338-19-6)
- Mivacurium chloride Impurity 64 (CAS CATO-C4X-137564)
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- (2-Cyclohexyl-6-fluoropyridin-4-yl)boronic acid (CAS 2225171-98-0)
- Clemastine Impurity 6 Fumarate (S,S-isomer) (CAS 61826-29-7)
- Dichloro(1,5-cyclooctadiene)platinum(II) (CAS 12080-32-9)
- Lactose Heptasulfate (CAS CATO-C3D-262596)
- 5-Amino-1-((3-bromothiophen-2-yl)methyl)pyridin-2(1h)-one (CAS 1250563-29-1)
- Mast Cell Degranulating Peptide (CAS 83856-13-7)
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