rac-Clopidogrel EP Impurity A CAS 90055-55-3
| CAS No. | 90055-55-3 |
| Molecular Formula | C15H14ClNO2S |
| Molecular Weight | 307.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, rac-Clopidogrel EP Impurity A is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 307.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies rac-Clopidogrel EP Impurity A (CAS 90055-55-3), a pharmacopoeial impurity reference standard (molecular formula C15H14ClNO2S, MW 307.80 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures rac-Clopidogrel EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H14ClNO2S |
| Molecular Weight | 307.80 g/mol |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related rac Standards
- Clopidogrel EP impurity A (CAS 144457-28-3)
- (R)-Clopidogrel Carboxylic Acid (CAS 324757-50-8)
- Clopidogrel Impurity 18 (CAS 444728-13-6)
- Clopidogrel EP Impurity E (R-Isomer) (CAS 444728-15-8)
- Clopidogrel EP Impurity E (CAS 90055-68-8)
- Clopidogrel Impurity 24 (CAS CATO-C4X-102924)
- Clopidogrel Thienylthyl Impurity (CAS 141109-20-8)
- Clopidogrel Impurity 104 (CAS CATO-C4X-1029104)
Recommended Standards
- Prothioconazole impurity N1 (CAS 708263-86-9)
- Etizolam Impurity 15 (CAS 51687-58-2)
- Telluroxanthone (CAS 72294-67-8)
- tert-Butyl 4-(4-chlorophenyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate (CAS 1108154-56-8)
- Fluralaner Impurity 63 (CAS 3027861-23-7)
- Perindopril Impurity 36 (CAS 145513-48-0)
- Netupitant Impurity 16 (CAS 2973069-91-7)
- (E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile (CAS 477887-46-0)
- (4-Morpholinopyrimidin-2-yl)methanamine hydrochloride (CAS 1196145-95-5)
- 6-Chloro-3-methoxypyridin-2-amine (CAS 175965-93-2)
- 898777-51-0 Ethyl 5-(3-nitrophenyl)-5-oxopentanoate DTXSID30645721 (CAS 898777-51-0)
- (2-Nitro-3-(trifluoromethyl)phenyl)methanamine (CAS 1227582-24-2)
- γ-Amino-2-methylbenzenepropanol (CAS 21464-52-8)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com