Brexpiprazole Impurity 161 CAS CATO-C4X-1131161
| CAS No. | CATO-C4X-1131161 |
| Molecular Formula | C13H14ClNO2 |
| Molecular Weight | 251.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Brexpiprazole Impurity 161 (CAS CATO-C4X-1131161), a pharmacopoeial impurity reference standard (molecular formula C13H14ClNO2, MW 251.71 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C13H14ClNO2, Brexpiprazole Impurity 161 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 251.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C13H14ClNO2 |
| Molecular Weight | 251.71 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole Impurity 16 (CAS 2116542-22-2)
- Brexpiprazole Impurity 23 (CAS CATO-C4X-113123)
- Brexpiprazole Impurity 24 (CAS 2809183-06-8)
- Brexpiprazole Impurity 7 (CAS 913613-82-8)
- Brexpiprazole Impurity 13 (CAS 15116-41-3)
- Brexpiprazole Impurity 66 (CAS CATO-C4X-113166)
- Brexpiprazole Impurity 87 (CAS 62969-59-9)
- Brexpiprazole Impurity 54 (CAS CATO-C4X-113154)
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- 1,4-Dioxaspiro[4.5]decan-7-ol (CAS 73223-83-3)
- Iguratimod Impurity 108 (CAS CATO-C4X-1826108)
- 4-Methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (CAS 77303-35-6)
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