Oxcarbazepine EP Impurity D CAS 19579-83-0
| CAS No. | 19579-83-0 |
| Molecular Formula | C14H9NO2 |
| Molecular Weight | 223.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Oxcarbazepine EP Impurity D.
CATO supplies Oxcarbazepine EP Impurity D (CAS 19579-83-0), a pharmacopoeial impurity reference standard (molecular formula C14H9NO2, MW 223.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Oxcarbazepine EP Impurity D (C14H9NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 223.23 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Oxcarbazepine EP Impurity D meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H9NO2 |
| Molecular Weight | 223.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Oxcarbazepine Standards
- Oxcarbazepine EP Impurity H (CAS 4698-11-7)
- Oxcarbazepine Impurity 24 (CAS 78880-65-6)
- Oxcarbazepine Impurity 27 (CAS 4014-77-1)
- Oxcarbazepine EP Impurity A (Carbamazepine) (CAS 298-46-4)
- Oxcarbazepine EP Impurity C (CAS 21737-58-6)
- Oxcarbazepine USP Related Compound C (CAS 578-95-0)
- Oxcarbazepine EP Impurity G (CAS 15882-79-8)
- Oxcarbazepine Impurity 29 (CAS CATO-C4X-116429)
Recommended Standards
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- Ethyl 5-(4-bromo-2,5-difluorophenoxy)pentanoate (CAS 1443305-35-8)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
Why CATO?
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