Brivaracetam Impurity 138 CAS CATO-C4X-2007138
| CAS No. | CATO-C4X-2007138 |
| Molecular Formula | C11H20N2O3 |
| Molecular Weight | 228.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Brivaracetam Impurity 138 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.
As a process- or degradation-related impurity, Brivaracetam Impurity 138 (CAS CATO-C4X-2007138, C11H20N2O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Brivaracetam Impurity 138 (C11H20N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 228.29 g/mol, it falls into the medium-molecular-weight range. 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 | C11H20N2O3 |
| Molecular Weight | 228.29 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Purity | 97%+ |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 2 |
Related Brivaracetam Standards
- Brivaracetam Impurity 10 (CAS CATO-C4X-200710)
- Brivaracetam impurity 105 (CAS 2413102-60-8)
- Brivaracetam Impurity 11 (CAS CATO-C4X-200711)
- Brivaracetam impurity 160 (CAS CATO-C4X-2007160)
- Brivaracetam Impurity 164 (CAS 2961384-68-7)
- Brivaracetam Impurity 58 (CAS CATO-C4X-200758)
- Brivaracetam Impurity 77 (CAS CATO-C4X-200777)
- Brivaracetam Impurity 56 (CAS CATO-C4X-200756)
Recommended Standards
- Phenytoin Impurity 23 (CAS 14704-09-7)
- Betahistine impurity 31 (CAS 91029-17-3)
- Phenacetin Impurity 7 (CAS 60457-49-0)
- Lansoprazole Impurity 48 (CAS CATO-C4X-161248)
- Eltrombopag Impurity 92 (CAS CATO-C4X-119892)
- Bambuterol Impurity 4 (CAS CATO-C4X-27464)
- Avibactam Impurity 33（2R,5R）Oxalate (CAS 2085372-14-9)
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- 3-Isoquinolinecarboxylic acid, decahydro-6-[2-(2H-tetrazol-5-yl)ethyl]-, (3R,4aS,6S,8aS)-rel- (CAS 150010-68-7)
- 5-Chloroisoquinoline 2-oxide (CAS 70810-25-2)
- 1-[(Trimethylsilyl)ethynyl]-4-(trifluoromethyl)benzene 40230-95-3 [4-(Trifluoromethyl)phenyl](trimethylsilyl)acetylene (CAS 40230-95-3)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
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