Tetrabenazine Impurity 25-D9 CAS CATO-C4X-274825
| CAS No. | CATO-C4X-274825 |
| Molecular Formula | - |
| Molecular Weight | 411.50 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 Tetrabenazine Impurity 25-D9 (CAS CATO-C4X-274825), a pharmacopoeial impurity reference standard (molecular formula C21H17D9N2O6, MW 411.50 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Tetrabenazine Impurity 25-D9 (C21H17D9N2O6) is characterized by deuterium isotope labeling, a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C21H17D9N2O6 |
| Molecular Weight | 411.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Tetrabenazine Standards
- Tetrabenazine Impurity 26-D9 (CAS CATO-C4X-274826)
- Tetrabenazine Impurity 53 (CAS CATO-C4X-274853)
- Tetrabenazine Impurity 54 (CAS CATO-C4X-274854)
- Tetrabenazine Impurity 14 (CAS 2070924-91-1)
- Tetrabenazine Impurity 52 (CAS CATO-C4X-274852)
- Tetrabenazine Impurity 45 (CAS CATO-C4X-274845)
- Tetrabenazine Impurity 46 (CAS CATO-C4X-274846)
- Tetrabenazine Impurity 12 (CAS CATO-C4X-274812)
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