Oxcarbazepine EP Impurity L（Mixture of Tautomers） CAS CATO-C4X-116416
| CAS No. | CATO-C4X-116416 |
| Molecular Formula | C17H14N2O3 |
| Molecular Weight | 294.30 g/mol |
| 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.
CATO supplies Oxcarbazepine EP Impurity L（Mixture of Tautomers） (CAS CATO-C4X-116416), a pharmacopoeial impurity reference standard (molecular formula C17H14N2O3, MW 294.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Oxcarbazepine EP Impurity L（Mixture of Tautomers） is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 294.30 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).
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 | C17H14N2O3 |
| Molecular Weight | 294.30 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Oxcarbazepine Standards
- Oxcarbazepine Impurity 22 (CAS 2642430-30-4)
- Oxcarbazepine Impurity 40 (CAS 186694-45-1)
- Oxcarbazepine EP Impurity F (CAS 28721-08-6)
- Oxcarbazepine Impurity 12 (CAS 537693-30-4)
- Oxcarbazepine EP Impurity K (CAS 1346601-76-0)
- Oxcarbazepine Impurity 28 (CAS 186694-22-4)
- Oxcarbazepine Impurity 38 (CAS CATO-C4X-116438)
- Oxcarbazepine Impurity 35 (CAS 98253-74-8)
Recommended Standards
- Mitiglinide Impurity 8 (CAS 19806-12-3)
- Olopatadine Impurity 66 (CAS CATO-C4X-171866)
- Methotrexate Impurity 43 (CAS 79974-20-2)
- Neomycin Impurity 15 (CAS 58096-76-7)
- Indazole Impurity 3 (CAS 1801267-04-8)
- Trizodone Hydrochloride EP Impurity L (CAS 13078-15-4)
- Ropinirole Impurity 21 (CAS CATO-C4X-174521)
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- 3-(1-Hydroxyethyl)pyridine (CAS 4754-27-2)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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