Cefprozil Impurity 43 CAS CATO-C4X-149243
| CAS No. | CATO-C4X-149243 |
| Molecular Formula | C26H26N4O7S |
| Molecular Weight | N/A |
| 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.
Cefprozil Impurity 43 (CAS CATO-C4X-149243) is a certified pharmaceutical impurity reference standard with the molecular formula C26H26N4O7SC2HF3O2 and a molecular weight of 652.60 g/mol.
Cefprozil Impurity 43 (C26H26N4O7SC2HF3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, 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. 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).
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 | C26H26N4O7S 2*C2HF3O2 |
| Molecular Weight | 652.60 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Cefprozil Standards
- Cefprozil Δ3 Isomer (CAS 1000980-59-5)
- Cefprozil EP Impurity D (CAS 106447-44-3)
- Cefprozil EP Impurity F (CAS 107937-01-9)
- Cefprozil (2S)-Isomer (CAS 110764-35-7)
- Cefprozil (E)-Isomer monohydrate (CAS 111900-24-4)
- Cefprozil (Z)-Isomer monohydrate (CAS 114876-72-1)
- Cefprozil Impurity 46 (CAS 120709-09-3)
- Cefprozil Monohydrate (CAS 121123-17-9)
Recommended Standards
- Tropisetron Hydrochloride EP Impurity B (CAS 771-50-6)
- Probucol Impurity 20 (CAS CATO-C4X-292020)
- Faropenem Impurity 62 (CAS CATO-C4X-128962)
- Ethyl 4-(2-((4-ethoxyphenyl)amino)-2-oxoethoxy)-6-oxo-1-(p-tolyl)-1,6-dihydropyridazine-3-carboxylate (CAS 899729-77-2)
- 1-(4-Chloro-2-fluorophenyl)-2-(2-pyridinyl)ethanone (CAS 1039946-66-1)
- 2,6-Dimethoxy-N-(5-(3-methylpentan-3-yl)-1,3,4-thiadiazol-2-yl)benzamide (CAS 82559-06-6)
- Dammaradienyl acetate (CAS 52914-31-5)
- Cefodizime Impurity 15 (CAS CATO-C4X-180615)
- (4-((3,5-Dimethylpiperidin-1-yl)sulfonyl)phenyl)(morpholino)methanone (CAS 392324-19-5)
- (Asn5)-Delta-Sleep Inducing Peptide (H-2555.0005) (CAS 80064-67-1)
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