Iopamidol Impurity 50 CAS CATO-C4X-145050
| CAS No. | CATO-C4X-145050 |
| Molecular Formula | C18H24I3N3O8 |
| Molecular Weight | 791.11 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 791.11 g/mol gives Iopamidol Impurity 50 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Iopamidol Impurity 50 (CAS CATO-C4X-145050) is a certified pharmaceutical impurity reference standard with the molecular formula C18H24I3N3O8 and a molecular weight of 791.11 g/mol.
Structurally, Iopamidol Impurity 50 (C18H24I3N3O8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 791.11 g/mol, it falls into the high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C18H24I3N3O8 |
| Molecular Weight | 791.11 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
Related Iopamidol Standards
- Iopamidol Impurity 26 (CAS CATO-C4X-145026)
- Iopamidol Impurity 56 (CAS CATO-C4X-145056)
- Iopamidol Impurity 47 (CAS CATO-C4X-145047)
- Iopamidol impurity 59 (CAS CATO-C4X-145059)
- Iopamidol EP Impurity G (CAS 1869069-72-6)
- (R)-Iopamidol (CAS 88375-91-1)
- Iopamidol (CAS 60166-93-0)
- Iopamidol Impurity 53 (CAS CATO-C4X-145053)
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