Ceftriaxone Impurity 33 CAS CATO-C4X-116333
| CAS No. | CATO-C4X-116333 |
| Molecular Formula | C32H31N13O12S5 |
| Molecular Weight | 949.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 949.99 g/mol gives Ceftriaxone Impurity 33 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ceftriaxone Impurity 33 (CAS CATO-C4X-116333) is a certified pharmaceutical impurity reference standard with the molecular formula C32H31N13O12S5 and a molecular weight of 949.99 g/mol.
Ceftriaxone Impurity 33 (C32H31N13O12S5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C32H31N13O12S5 |
| Molecular Weight | 949.99 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) | 24.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 13 |
| Sulfur Atoms | 5 |
Related Ceftriaxone Standards
- Ceftriaxone impurity 49 (CAS CATO-C4X-116349)
- Ceftriaxone Impurity 50 (CAS CATO-C4X-116350)
- Ceftriaxone Impurity 51 (CAS CATO-C4X-116351)
- Ceftriaxone Impurity 17 (CAS CATO-C4X-116317)
- Ceftriaxone Impurity 23 (CAS CATO-C4X-116323)
- Ceftriaxone Impurity 24 (CAS CATO-C4X-116324)
- Ceftriaxone Impurity 28 (CAS CATO-C4X-116328)
- Ceftriaxone Impurity 29 (CAS CATO-C4X-116329)
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