Brivaracetam Impurity 61 CAS CATO-C4X-200761
| CAS No. | CATO-C4X-200761 |
| Molecular Formula | C11H17NO4 |
| Molecular Weight | 227.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Brivaracetam Impurity 61 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.
Brivaracetam Impurity 61 (CAS CATO-C4X-200761) is a certified pharmaceutical impurity reference standard with the molecular formula C11H17NO4 and a molecular weight of 227.26 g/mol.
The molecular framework of Brivaracetam Impurity 61 (C11H17NO4) is characterized by an amino-acid-derived structure, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H17NO4 |
| Molecular Weight | 227.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Brivaracetam Standards
- Brivaracetam Impurity 78 (CAS CATO-C4X-200778)
- Brivaracetam Impurity 82 (CAS CATO-C4X-200782)
- Brivaracetam Impurity 9 (CAS CATO-C4X-20079)
- Brivaracetam Impurity 183 (CAS CATO-C4X-2007183)
- Brivaracetam Impurity 200 (CAS CATO-C4X-2007200)
- Brivaracetam Impurity 38 (CAS CATO-C4X-200738)
- Brivaracetam Impurity 73 (CAS 2052297-80-8)
- Brivaracetam Impurity 56 (CAS CATO-C4X-200756)
Recommended Standards
- Bumetanide Impurity 75 (CAS CATO-C4X-198675)
- Varenicline Impurity 8 (CAS 2724982-86-7)
- Varenicline Impurity 48 (CAS CATO-C4X-196248)
- Urapidil Impurity 45 (CAS CATO-C4X-192445)
- Resmetirom Impurity 100 (CAS CATO-C4X-2912100)
- Rivaroxaban Impurity 77 (CAS CATO-C4X-109077)
- Midazolam Impurity 27 (CAS CATO-C4X-150927)
- 2-Chloro-n-(cyclohexylmethyl)-n-methylacetamide (CAS 895244-96-9)
- tert-butyl 3-benzoyl-3-fluoro-azetidine-1-carboxylate (CAS 2507826-31-3)
- 1-(Isoquinolin-1-yl)-1H-pyrrole-3-carboxylic acid (CAS 649727-06-0)
- 5-Bromo-7-iodobenzo[d][1,3]dioxol-4-amine (CAS 643086-28-6)
- Rac-tert-butyl n-[(1r,2r)-2-aminocycloheptyl]carbamate, trans (CAS 1305711-56-1)
- Ethyl 4-iodo-3,5-dimethyl-1H-pyrrole-2-carboxylate (CAS 5408-08-2)
- Semaglutide Impurity 14(Discontinued,See CPTD788307 ) (CAS CATO-C4X-222614)
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