Clopidogrel Impurity 85 CAS 1219432-42-4
| CAS No. | 1219432-42-4 |
| Molecular Formula | C16H16ClNO3S |
| 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 85 (CAS 1219432-42-4) is a certified pharmaceutical impurity reference standard with the molecular formula C16H16ClNO3SHCl and a molecular weight of 374.28 g/mol.
Structurally, Clopidogrel Impurity 85 (C16H16ClNO3SHCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 374.28 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C16H16ClNO3S HCl |
| Molecular Weight | 374.28 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-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
- Ezetimibe Impurity 36 (CAS 189028-93-1)
- Neostigmine Impurity 5 (CAS 3743-22-4)
- Sucralose EP Impurity H (Mixture of Isomers) (CAS 2366151-13-3)
- n-(3-Cyano-4-methoxyphenyl)methanesulfonamide (CAS 1482856-08-5)
- 6-Cyclopropyl-5-methylpyrimidin-4(1H)-one (CAS 21741-39-9)
- 2-Amino-5-chloro-3-nitrobenzoic acid (CAS 6324-51-2)
- (R)-(4-Chloro-3-fluorophenyl)(cyclopropyl)methanamine hydrochloride (CAS 2301881-46-7)
- 3-(6-bromo-4-methyl-2-pyridyl)tetrahydrofuran-3-ol (CAS 2368946-05-6)
- Cefixime Trihydrate (CAS 125110-14-7)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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