Clopidogrel Impurity 29 CAS 1396607-49-0
| CAS No. | 1396607-49-0 |
| Molecular Formula | C16H15ClNO2S |
| Molecular Weight | N/A |
| 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 29 (CAS 1396607-49-0) is a certified pharmaceutical impurity reference standard with the molecular formula C16H15ClNO2SBr and a molecular weight of 400.71 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, Clopidogrel Impurity 29 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 400.71 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 | C16H15ClNO2S Br |
| Molecular Weight | 400.71 g/mol |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Clopidogrel Standards
- Clopidogrel Impurity 74 (CAS 1008008-56-7)
- Clopidogrel Impurity 82 (CAS 1015247-87-6)
- rac-Clopidogrel EP Impurity A HCl (CAS 1015247-88-7)
- rac Clopidogrel [(tert-Butylcarbonyl)oxy]methyl ester (CAS 1043913-82-1)
- 2-Oxo Clopidogrel (Mixture of Diastereomers) (CAS 109904-27-0)
- Clopidogrel Impurity 42 (CAS 109904-36-1)
- cis-Clopidogrel glutathione disulfide, mixture of diastereomers (CAS 1118605-95-0)
- Clopidogrel Impurity 48 (CAS 111954-31-5)
Recommended Standards
- Prazosin EP Impurity D (CAS 40172-95-0)
- N-Nitroso paroxetine impurity B (CAS CATO-C4X-103580)
- Esomeprazole Impurity 86 (CAS 287118-45-0)
- 2-(4-Bromothiophen-2-yl)-4-chloropyrimidine (CAS 1155598-33-6)
- 6-Aminotetramethylrhodamine (CAS 159435-10-6)
- Ethyl 2-(4-Bromo-5-methyl-3-indolyl)-2-oxoacetate (CAS 2097800-31-0)
- Tert-Butyl 6-chloro-3-oxo-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate (CAS 855849-90-0)
- 4-(Pentan-3-yl)pyrrolidin-2-one (CAS 850079-91-3)
- 2-(Fluoromethyl)pyrrolidine hydrochloride (CAS 1781050-17-6)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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