Clopidogrel Impurity 126 CAS CATO-C4X-1029126
| CAS No. | CATO-C4X-1029126 |
| Molecular Formula | C20H20ClNO2S2 |
| Molecular Weight | 405.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Clopidogrel Impurity 126 (CAS CATO-C4X-1029126) is a certified pharmaceutical impurity reference standard with the molecular formula C20H20ClNO2S2 and a molecular weight of 405.96 g/mol.
Based on its molecular formula C20H20ClNO2S2, Clopidogrel Impurity 126 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 405.96 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).
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.
Physical & Chemical Properties
| Molecular Formula | C20H20ClNO2S2 |
| Molecular Weight | 405.96 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Clopidogrel Standards
- Clopidogrel Sulfonated Impurity (CAS 2173294-69-2)
- Clopidogrel Impurity 44 (CAS CATO-C4X-102944)
- Clopidogrel Impurity 131 (CAS 2173294-67-0(free base))
- Clopidogrel Impurity 62 (CAS CATO-C4X-102962)
- rac Clopidogrel [(tert-Butylcarbonyl)oxy]methyl ester (CAS 1043913-82-1)
- Clopidogrel Impurity 71 (CAS 1346231-36-4)
- Clopidogrel Impurity 57 (CAS CATO-C4X-102957)
- Clopidogrel Impurity 72 (CAS CATO-C4X-102972)
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