Oxcarbazepine Impurity 26 CAS 33948-19-5
| CAS No. | 33948-19-5 |
| Molecular Formula | C15H12ClNO |
| Molecular Weight | 257.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Oxcarbazepine Impurity 26 (CAS 33948-19-5) is a certified pharmaceutical impurity reference standard with the molecular formula C15H12ClNO and a molecular weight of 257.71 g/mol.
Oxcarbazepine Impurity 26 (C15H12ClNO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H12ClNO |
| Molecular Weight | 257.71 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Oxcarbazepine Standards
- Oxcarbazepine-d4 (CAS 1134188-71-8)
- Oxcarbazepine-d4 (CAS 1020719-71-4)
- Oxcarbazepine Impurity 29 (CAS CATO-C4X-116429)
- Oxcarbazepine (CAS 28721-07-5)
- Oxcarbazepine EP Impurity G (CAS 15882-79-8)
- Oxcarbazepine Impurity 5 (CAS 153261-62-2)
- Oxcarbazepine EP Impurity I (CAS 537693-29-1)
- Oxcarbazepine EP Impurity B (CAS 28721-09-7)
Recommended Standards
- Baclofen impurity 26 (CAS CATO-C4X-101226)
- Meclofenoxate Impurity 5 (CAS CATO-C4X-24695)
- 33107-73-2 1-(6-chloro-9-methyl-9H-carbazol-3-yl)ethanone DTXSID80385726 (CAS 33107-73-2)
- 2-(4-(2-Amino-6-chloropyrimidin-4-yl)piperazin-1-yl)ethanol (CAS 1017782-76-1)
- Dotinurad Impurity 192 (CAS CATO-C4X-2494192)
- Tranilast Impurity 13 (CAS CATO-C4X-252913)
- Canagliflozin Impurity 34 (CAS 32384-65-9)
- N-Pentadecanonitrile (CAS 18300-91-9)
- Tert-butyl 3-(1-methyl-1H-pyrazol-5-yl)-2,5-dihydro-1H-pyrrole-1-carboxylate (CAS 2168832-11-7)
- (1-Methyl-1H-pyrazol-4-yl)(m-tolyl)methanone (CAS 1152835-78-3)
- 2-(pyrrolidin-3-yl)-5-(trifluoromethyl)pyridine dihydrochloride (CAS 1909318-71-3)
- Gadoteridol Impurity 19 (CAS CATO-C4X-225719)
- 2-Phenyl-1,3-thiazole-4-carbonyl chloride (CAS 36094-04-9)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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