Clopidogrel Impurity 79 CAS CATO-C4X-102979
| CAS No. | CATO-C4X-102979 |
| Molecular Formula | C16H16ClNO3S |
| Molecular Weight | 337.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Clopidogrel Impurity 79 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Clopidogrel Impurity 79 (CAS CATO-C4X-102979) is a certified pharmaceutical impurity reference standard with the molecular formula C16H16ClNO3S and a molecular weight of 337.82 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Clopidogrel Impurity 79 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 337.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C16H16ClNO3S |
| Molecular Weight | 337.82 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Clopidogrel Standards
- Clopidogrel Impurity 128 (CAS CATO-C4X-1029128)
- R-Clopidogrel N-Oxide (CAS CATO-C4X-102942)
- S-Clopidogrel N-Oxide (CAS 1319197-71-1)
- Clopidogrel Impurity 80 (CAS 527687-26-9)
- Clopidogrel Impurity 81 (CAS 1147350-75-1)
- Clopidogrel Impurity 114 (CAS CATO-C4X-1029114)
- Clopidogrel Impurity 115 (CAS CATO-C4X-1029115)
- Clopidogrel Impurity 123 (CAS CATO-C4X-1029123)
Recommended Standards
- 2-Oxo-R-Clopidogrel (Mixture of Diastereomers) (CAS 1360923-54-1)
- 2-(4-(4-Chlorophenyl)-1H-pyrazol-1-yl)-4-phenylthiazole (CAS 956779-41-2)
- 2-(4-Chlorophenyl)-2-(6-(phenylthio)pyridazin-3-yl)acetonitrile (CAS 303997-39-9)
- Tosyl-L-phenylalaninoyl chloride (CAS 29739-88-6)
- Terbutaline EP Impurity A (CAS 99-10-5)
- Drotaverin Impurity 52 (CAS CATO-C4X-243552)
- Bicalutamide EP Impurity F (CAS CATO-C4X-101326)
- 2-Chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1h-pyrazol-4-yl)-5-nitrobenzamide (CAS 301233-14-7)
- Gold(I) sulfide (CAS 1303-60-2)
- 2-(Bromomethyl)-6-cyano-5-(difluoromethyl)-3-nitropyridine (CAS 1807158-20-8)
- 2-[(4-Benzylphthalazin-1-yl)sulfanyl]pyridin-1-ium-1-olate (CAS 338418-00-1)
- 2,6-Dibromo-4-(chloromethyl)pyridine (CAS 1227572-71-5)
- 2-(4-(Benzyloxy)-3-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1257078-54-8)
- Atrial Natriuretic Peptide (ANP)(1-28) Alpha (Human, Ovine, Canine) (CAS 91917-63-4)
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