Brivaracetam Impurity 157 CAS 930123-38-9
| CAS No. | 930123-38-9 |
| Molecular Formula | C7H13NO |
| Molecular Weight | 127.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Brivaracetam Impurity 157 (C7H13NO) contains an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Brivaracetam Impurity 157 (CAS 930123-38-9, C7H13NO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H13NO |
| Molecular Weight | 127.18 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Brivaracetam Standards
- Brivaracetam Impurity 114 (CAS CATO-C4X-2007114)
- Brivaracetam Impurity 29 (CAS 2179080-15-8)
- Brivaracetam Impurity 40 (CAS 930123-37-8)
- Brivaracetam Impurity 60 (CAS CATO-C4X-200760)
- Brivaracetam Impurity 72 (CAS 89895-19-2)
- Brivaracetam Impurity 79 (CAS 4380-89-6)
- Brivaracetam Impurity 1 (CAS 63095-60-3)
- Brivaracetam impurity 109 (CAS 53657-15-1)
Recommended Standards
- Solifenacin EP Impurity E (CAS 25333-42-0)
- Solifenacin Impurity 30 (CAS 34583-34-1)
- 1-Methylpiperidine-4-carbaldehyde (CAS 50675-21-3)
- 1-Acetylpiperidine (CAS 618-42-8)
- Etomidate Impurity 24 (CAS CATO-C4X-188424)
- Amlodipine Impurity 14 (CAS 1821498-25-2)
- Triptorelin Impurity 21 ·x Acetic acid salt (CAS 78969-57-0(free base))
- (2R,3R)-2-phenylpyrrolidine-3-carboxylic acid (CAS 1241684-18-3)
- N-(4-chlorophenyl)-4-hydroxy-1-methyl-1H-benzo[c][1,2]thiazine-3-carbothioamide 2,2-dioxide (CAS 477860-30-3)
- Lithium(2R,3R)-3-cyclopropyl-1-methylaziridine-2-carboxylate (CAS 2864383-31-1)
- 3-O-Benzyl Estrone (CAS 858-98-0)
- 2,6-Bis[(4S)-4,5-dihydro-4-(1-methylethyl)-2-oxazolyl]-3,5-bis(3,3-dimethylbutyl)pyridine (CAS 1869990-01-1)
- 5-(3-Bromo-5-ethoxy-4-((4-methylbenzyl)oxy)phenyl)-1,3,4-oxadiazol-2-amine (CAS 1706457-21-7)
- C-Peptide 1 (rat) (CAS 41475-27-8)
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