rac-Clopidogrel EP Impurity A-D4 CAS 1246814-52-7
| CAS No. | 1246814-52-7 |
| Molecular Formula | - |
| Molecular Weight | 311.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, rac-Clopidogrel EP Impurity A-D4 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies rac-Clopidogrel EP Impurity A-D4 (CAS 1246814-52-7), a pharmacopoeial impurity reference standard (molecular formula C15H10D4ClNO2S, MW 311.82 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C15H10D4ClNO2S |
| Molecular Weight | 311.82 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 11.0 |
| 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 rac Standards
- Clopidogrel Amide-d4 (CAS 1219423-91-2)
- Clopidogrel Thienylthyl Impurity (CAS 141109-20-8)
- Clopidogrel Impurity 104 (CAS CATO-C4X-1029104)
- Clopidogrel Impurity 127 (CAS CATO-C4X-1029127)
- Clopidogrel EP impurity A (CAS 144457-28-3)
- rac-Clopidogrel EP Impurity A (CAS 90055-55-3)
- (R)-Clopidogrel Carboxylic Acid (CAS 324757-50-8)
- Clopidogrel Impurity 18 (CAS 444728-13-6)
Recommended Standards
- Brinzolamide Impurity 18 (CAS 160982-13-8)
- 7-Chloro-4-methyl-N-(2-morpholinoethyl)benzo[d]thiazol-2-amine (CAS 1105189-47-6)
- tert-Butyl 4-(6-chloro-4-methylpyridin-2-yl)piperazine-1-carboxylate (CAS 2140305-50-4)
- 5-Chloro-4-methyl-N-(2-morpholinoethyl)benzo[d]thiazol-2-amine (CAS 1177328-36-7)
- Acetylcysteine Impurity 29 (CAS CATO-C4X-153229)
- Ipragliflozin Impurity 2 (CAS CATO-C4X-18852)
- Boceprevir Impurity 7 (CAS CATO-C4X-25257)
- Isoeicosanol (CAS 52655-10-4)
- Cyclopropyl 2-(4-thiomethylphenyl)ethyl ketone (CAS 898781-87-8)
- 2-((4-Nitrophenyl)sulfonyl)benzoic acid (CAS 39950-34-0)
- 3-(4-Methylbenzoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-amine (CAS 247206-89-9)
- Methyl 3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate (CAS 758684-29-6)
- Probucol Impurity 16 (CAS 2093160-06-4)
- Semaglutide Impurity 183 (CAS 159541-28-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com