Clopidogrel Impurity N1 CAS 85567-51-7
| CAS No. | 85567-51-7 |
| Molecular Formula | C12H12O3S2 |
| Molecular Weight | 268.35 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.
As a process- or degradation-related impurity, Clopidogrel Impurity N1 (CAS 85567-51-7, C12H12O3S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C12H12O3S2, Clopidogrel Impurity N1 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 268.35 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.
Physical & Chemical Properties
| Molecular Formula | C12H12O3S2 |
| Molecular Weight | 268.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Sulfur Atoms | 2 |
Related Clopidogrel Standards
- Clopidogrel Impurity 15 (CAS 40412-06-4)
- Clopidogrel Impurity 59 (CAS 40412-09-7)
- Clopidogrel Impurity 30 (CAS 69061-17-2)
- Clopidogrel Impurity 120 (CAS CATO-C4X-1029120)
- Clopidogrel Impurity 78 (CAS CATO-C4X-102978)
- Clopidogrel Impurity 82 (CAS 1015247-87-6)
- Clopidogrel Impurity 74 (CAS 1008008-56-7)
- Clopidogrel Impurity 75 (CAS 1217999-35-3)
Recommended Standards
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- 2,3-Dimethyl-3-(2-methoxyphenyl)propiophenone (CAS 898769-97-6)
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- 5-(2-Nitrophenoxymethyl)furan-2-carbaldehyde (CAS 438221-76-2)
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