Oxcarbazepine Impurity 28 CAS 186694-22-4
| CAS No. | 186694-22-4 |
| Molecular Formula | C18H18N2O3 |
| Molecular Weight | 310.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H18N2O3, Oxcarbazepine Impurity 28 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 310.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Oxcarbazepine Impurity 28 (CAS 186694-22-4), a pharmacopoeial impurity reference standard (molecular formula C18H18N2O3, MW 310.35 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.
CATO manufactures Oxcarbazepine Impurity 28 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 | C18H18N2O3 |
| Molecular Weight | 310.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Nitrogen Atoms | 2 |
Related Oxcarbazepine Standards
- Oxcarbazepine Impurity 38 (CAS CATO-C4X-116438)
- Oxcarbazepine Impurity 33 (CAS CATO-C4X-116433)
- Oxcarbazepine Impurity 40 (CAS 186694-45-1)
- Oxcarbazepine Impurity 22 (CAS 2642430-30-4)
- Oxcarbazepine EP Impurity L（Mixture of Tautomers） (CAS CATO-C4X-116416)
- Oxcarbazepine Enol-Sulfate (CAS 104746-00-1)
- Oxcarbazepine N-Sulfate (CAS 1159977-54-4)
- Oxcarbazepine EP Impurity F (CAS 28721-08-6)
Recommended Standards
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- Levofloxacin impurity 78 (CAS 107359-24-0)
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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