Brivaracetam Impurity 42 CAS 2101641-92-1
| CAS No. | 2101641-92-1 |
| Molecular Formula | C7H13BrO2 |
| Molecular Weight | 209.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Brivaracetam Impurity 42 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Brivaracetam Impurity 42 (CAS 2101641-92-1, C7H13BrO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, Brivaracetam Impurity 42 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 209.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 42 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 | C7H13BrO2 |
| Molecular Weight | 209.08 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Br-containing |
Related Brivaracetam Standards
- Brivaracetam Impurity 18 (CAS 1942054-60-5)
- Brivaracetam Impurity 67 (CAS 357338-13-7)
- Brivaracetam Impurity 165 (CAS CATO-C4X-2007165)
- Brivaracetam Impurity 197 (CAS CATO-C4X-2007197)
- Brivaracetam (CAS 357336-20-0)
- Brivaracetam impurity 104 (CAS 357334-83-9)
- Brivaracetam Impurity 131 (CAS CATO-C4X-2007131)
- Brivaracetam Impurity 144 (CAS CATO-C4X-2007144)
Recommended Standards
- 2,6-Dichlorophenylmethylsulfoxide (CAS 122199-98-8)
- Amiodarone Impurity 31 (CAS 5445-19-2)
- 1-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,5-dihydro-pyrrole (CAS 1779540-37-2)
- Choline fenofibrate Impurity 24 (CAS 51368-55-9)
- Etrasimod Impurity 65 (CAS CATO-C4X-321465)
- Pipotiazine Impurity 1 (CAS CATO-C4X-33611)
- Riociguat Impurity 26 (CAS 304874-06-4)
- 1-(2,4-Dimethoxyphenyl)ethane-1-thiol (CAS 1039935-39-1)
- 2-(Difluoromethyl)-4,6-diiodopyridine-3-carboxaldehyde (CAS 1804450-41-6)
- O-(naphthalen-2-ylmethyl)hydroxylamine (CAS 54484-69-4)
- Ethyl 3-aminooxetane-3-carboxylate (CAS 1507113-65-6)
- Rivastigmine N-Oxide Impurity TFA (CAS CATO-C4X-138418)
- 3-Methyl-4-nitro-butyricacidethylester (CAS 2985-50-4)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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