Brivaracetam Impurity 5 CAS 943986-67-2
| CAS No. | 943986-67-2 |
| Molecular Formula | C11H19NO3 |
| Molecular Weight | 213.27 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 Brivaracetam Impurity 5.
As a process- or degradation-related impurity, Brivaracetam Impurity 5 (CAS 943986-67-2, C11H19NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Brivaracetam Impurity 5 (C11H19NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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), Brivaracetam Impurity 5 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 | C11H19NO3 |
| Molecular Weight | 213.27 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Brivaracetam Standards
- Brivaracetam Impurity 166 (CAS 2755924-55-9)
- Brivaracetam Impurity 37 (CAS 2165431-90-1)
- Brivaracetam Impurity 53 (CAS CATO-C4X-200753)
- Brivaracetam Impurity 54 (CAS CATO-C4X-200754)
- Brivaracetam Impurity 39 (CAS 765887-92-1)
- Brivaracetam (CAS 357336-20-0)
- Brivaracetam impurity 104 (CAS 357334-83-9)
- Brivaracetam Impurity 131 (CAS CATO-C4X-2007131)
Recommended Standards
- Irbesartan Impurity 3 (CAS 15026-80-9)
- Bilastine Impurity 25 (CAS 137076-22-3)
- Irbesartan Impurity 23 (CAS CATO-C4X-166623)
- Daprodustat Impurity 32 (CAS CATO-C4X-240732)
- Tedizolid Impurity 85 (CAS 1239662-47-5)
- Salbutamol Impurity 75 (CAS 1221726-71-1)
- Sildenafil Impurity 248 (CAS 139756-30-2)
- 2-(3-Fluorophenyl)-1H-benzo[d]imidazole (CAS 324-15-2)
- (1,3-Dioxan-2-yl)methanol (CAS 39239-93-5)
- 2-(Bromomethyl)-6-mercaptobenzo[d]oxazole (CAS 1806555-83-8)
- Benzamide, 4-bromo-N-ethyl-3-methoxy-N-methyl- (CAS 1403330-01-7)
- 4-{[4-(4-fluorophenyl)piperazin-1-yl]methyl}-1,3-thiazol-2-amine (CAS 120652-89-3)
- 1-(5-(2-nitro-4-(trifluoromethyl)phenyl)furan-2-yl)-N-phenylmethanimine oxide (CAS 647824-24-6)
- Liraglutide(10-22)TFA Salt (CAS CATO-C4X-199211)
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