Ceftiofur Impurity 15 CAS CATO-C4X-158117
| CAS No. | CATO-C4X-158117 |
| Molecular Formula | C19H17N5O7S3 |
| Molecular Weight | 523.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ceftiofur Impurity 15 is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ceftiofur Impurity 15 (CAS CATO-C4X-158117) is a certified pharmaceutical impurity reference standard with the molecular formula C19H17N5O7S3 and a molecular weight of 523.56 g/mol.
Based on its molecular formula C19H17N5O7S3, Ceftiofur Impurity 15 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 523.56 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C19H17N5O7S3 |
| Molecular Weight | 523.56 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 3 |
Related Ceftiofur Standards
- Ceftiofur Impurity 2 (CAS 120962-17-6)
- Ceftiofur Impurity 3 (CAS 120882-20-4)
- Ceftiofur (CAS 80370-57-6)
- Ceftiofur-d3 Sodium Salt (CAS 104010-37-9 (unlabelled))
- Ceftiofur-d3 (CAS 2673269-87-7)
- Ceftiofur Impurity 12 (CAS CATO-C4X-158112)
- Ceftiofur Impurity 11 (CAS CATO-C4X-158111)
- Ceftiofur Impurity 14 (CAS CATO-C4X-158114)
Recommended Standards
- Dibenzyl ((S)-1-(((S)-1-amino-1-oxo-3-phenylpropan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)phosphoramidate (CAS 90195-15-6)
- H-Arg-Phe-Asp-Ser-OH (CAS 102567-19-1)
- Apixaban Impurity 56 (CAS 1620386-62-0)
- Tryptophan Impurity 10 (CAS 84771-20-0)
- CAS CATO-C4X-34244 (CAS CATO-C4X-34244)
- Neratinib Impurity 56 (CAS CATO-C4X-113456)
- Mosapride Impurity 29 (CAS 22116-33-2)
- 1-(3-Methoxypropyl)-1h-indol-4-amine (CAS 1339472-15-9)
- Moxifloxacin impurity 175 (CAS 104599-90-8)
- (S)-Methyl 5,5-dimethylpyrrolidine-2-carboxylate (CAS 747407-19-8)
- Betahistine-D3 Dihydrochloride (CAS 244094-72-2)
- 3-(1H-Benzimidazol-2-yl)-2,3-dihydroxypropanoic acid (CAS 49671-84-3)
- 1-{4-methoxypyrrolo[2,1-f][1,2,4]triazin-7-yl}ethan-1-one (CAS 1551034-09-3)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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