| CAS No. | CATO-C4X-2007139 |
| Molecular Formula | C8H17N3O2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 268.15 g/mol gives Brivaracetam Impurity 139 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Brivaracetam Impurity 139 (CAS CATO-C4X-2007139) is a certified pharmaceutical impurity reference standard with the molecular formula C8H17N3O2HBr and a molecular weight of 268.15 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, Brivaracetam Impurity 139 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 268.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Brivaracetam Impurity 139 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C8H17N3O2 2*HBr |
| Molecular Weight | 268.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |