Iopamidol Impurity 43 CAS CATO-C4X-145043
| CAS No. | CATO-C4X-145043 |
| Molecular Formula | C13H12ClI3N2O5 |
| Molecular Weight | 692.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Iopamidol Impurity 43.
Iopamidol Impurity 43 (CAS CATO-C4X-145043) is a certified pharmaceutical impurity reference standard with the molecular formula C13H12ClI3N2O5 and a molecular weight of 692.41 g/mol.
Based on its molecular formula C13H12ClI3N2O5, Iopamidol Impurity 43 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 692.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H12ClI3N2O5 |
| Molecular Weight | 692.41 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 | Cl/I-containing |
| Nitrogen Atoms | 2 |
Related Iopamidol Standards
- Iopamidol EP Impurity I (CAS CATO-C4X-145010)
- Iopamidol EP Impurity H (CAS CATO-C4X-145011)
- Iopamidol Impurity 33 (CAS CATO-C4X-145033)
- Iopamidol Impurity 49 (CAS CATO-C4X-145049)
- Iopamidol Impurity 58 (CAS CATO-C4X-145058)
- Iopamidol EP Impurity D (CAS 87932-11-4)
- Iopamidol EP Impurity A (CAS 60166-98-5)
- Iopamidol Impurity 44 (CAS CATO-C4X-145044)
Recommended Standards
- Maytansine (CAS 35846-53-8)
- (SP-4-2)-[1,1'-(1,4-butanediyl)bis[1,1-diphenylphosphine-κp]]dichloroplatinum (CAS 65097-96-3)
- 4-[(1E,3S,5Z,8R/S,10S)-3,11-Bis-{[tert-butyl(dimethyl)silyl]oxy}-2,6,10-trimethyl-8-(phenylsulfonyl)undeca-1,5-dienyl]-2-methyl-1,3-thiazole (CAS 308357-81-5)
- Dotinurad Impurity 134 (CAS CATO-C4X-2494134)
- Clomifene Citrate EP Impurity D (CAS 1391054-64-0)
- Ilaprazole impurity 195 (CAS CATO-C4X-1130195)
- Bumetanide Impurity 7 (CAS 130262-91-8)
- Lesogaberan (CAS 344413-67-8)
- (R)-2-methyl-N-(2-(trifluoromethyl)benzylidene)propane-2-sulfinamide (CAS 1415337-87-9)
- (R)-4-(tert-Butyl)oxazolidine-2,5-dione (CAS 1260587-82-3)
- 4-(4-Fluorophenyl)bicyclo[2.2.2]Octane-1-carbonitrile (CAS 61541-38-6)
- Roburic Acid (CAS 6812-81-3)
- Relebactam Impurity 129 (CAS CATO-C4X-2144129)
- Semaglutide Impurity 131 (CAS 2618647-80-4)
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