Clopidogrel Impurity 128 CAS CATO-C4X-1029128
| CAS No. | CATO-C4X-1029128 |
| Molecular Formula | C16H16ClNO3S |
| Molecular Weight | 337.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H16ClNO3S, Clopidogrel Impurity 128 contains a nitrogen-containing heterocyclic scaffold, 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 337.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Clopidogrel Impurity 128 (CAS CATO-C4X-1029128) is a certified pharmaceutical impurity reference standard with the molecular formula C16H16ClNO3S and a molecular weight of 337.82 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C16H16ClNO3S |
| Molecular Weight | 337.82 g/mol |
| Purity | ≥95% |
| 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
- R-Clopidogrel N-Oxide (CAS CATO-C4X-102942)
- S-Clopidogrel N-Oxide (CAS 1319197-71-1)
- Clopidogrel Impurity 79 (CAS CATO-C4X-102979)
- 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
- Tosyl-L-phenylalaninoyl chloride (CAS 29739-88-6)
- 2-Oxo-R-Clopidogrel (Mixture of Diastereomers) (CAS 1360923-54-1)
- N-allyl-6-(((4-chlorophenyl)sulfonyl)methyl)-2-methylpyrimidin-4-amine (CAS 338960-56-8)
- N-[4-(2-Chlorophenyl)-1,3-thiazol-2-yl]-2-(morpholin-4-yl)acetamide (CAS 338749-93-2)
- CAS 300547-20-0 (CAS 300547-20-0)
- Haloperidol Impurity 20 (CAS 185626-66-8)
- Triclabendazole EP Impurity D (CAS 118353-04-1)
- 2-methoxypyridine-3-sulfonamide (CAS 1566061-98-0)
- (S)-1-(4-Fluoro-3-methylphenyl)ethanamine (CAS 1213299-63-8)
- N-(4-(4-(Bis(2-hydroxyethyl)amino)phenyl)isoquinolin-3-yl)acetamide (CAS 64157-35-3)
- Cyclo(L-Leu-trans-4-hydroxy-L-Pro) (CAS 115006-86-5)
- (1R,2E,7R,8E,10R,12R,13S,17R)-7-[(2R,4R,6R)-4,5-dihydroxy-6-methyloxan-2-yl]oxy-17-hydroxy-13-[(2R,4R,5S,6S)-5-hydroxy-4,6-dimethyl-7-oxononan-2-yl]-2,10,12,20-tetramethyl-14,21-dioxabicyclo[15.3.1]henicosa-2,8,19-trien-15-one 33538-72-6 (CAS 33538-72-6)
- 1'-Benzyl-7-fluoro-4,5-dihydro-3H-spiro[benzo[b][1,4]oxazepine-2,4'-piperidine] (CAS 947617-96-1)
- Glucagon (1-29) (CAS 16941-32-5)
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