Ceftazidime Impurity 53 CAS CATO-C4X-121253
| CAS No. | CATO-C4X-121253 |
| Molecular Formula | C39H41N11O15S4 |
| Molecular Weight | 1032.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ceftazidime Impurity 53 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1032.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Ceftazidime Impurity 53 (CAS CATO-C4X-121253) is a certified pharmaceutical impurity reference standard with the molecular formula C39H41N11O15S4 and a molecular weight of 1032.07 g/mol.
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 | C39H41N11O15S4 |
| Molecular Weight | 1032.07 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 |
| Degree of Unsaturation (DBE) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 11 |
| Sulfur Atoms | 4 |
Related Ceftazidime Standards
- Ceftazidime Impurity 33 (CAS CATO-C4X-121233)
- Ceftazidime dimer derivative 1 (CAS CATO-C4X-121267)
- Ceftazidime dimer derivative 2 (CAS CATO-C4X-121268)
- Ceftazidime dimer derivative 3 (CAS CATO-C4X-121269)
- Ceftazidime Impurity 22 (CAS CATO-C4X-121222)
- Ceftazidime Impurity 94 (CAS CATO-C4X-121294)
- Ceftazidime Impurity 54 (CAS CATO-C4X-121254)
- Ceftazidime Impurity 21 (CAS CATO-C4X-121221)
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