Brexpiprazole Impurity 163 CAS CATO-C4X-1131163
| CAS No. | CATO-C4X-1131163 |
| Molecular Formula | C23H25N3O2S |
| Molecular Weight | 407.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Brexpiprazole Impurity 163 (C23H25N3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
As a process- or degradation-related impurity, Brexpiprazole Impurity 163 (CAS CATO-C4X-1131163, C23H25N3O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C23H25N3O2S |
| Molecular Weight | 407.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole Impurity 42 (CAS CATO-C4X-113142)
- Brexpiprazole Impurity 100 (CAS CATO-C4X-1131100)
- Brexpiprazole impurity 105 (CAS CATO-C4X-1131105)
- Brexpiprazole Impurity 102 (CAS CATO-C4X-1131102)
- Brexpiprazole impurity 103 (CAS CATO-C4X-1131103)
- Brexpiprazole impurity 104 (CAS CATO-C4X-1131104)
- Brexpiprazole Impurity 99 (CAS CATO-C4X-113199)
- Brexpiprazole impurity 72 (CAS CATO-C4X-113172)
Recommended Standards
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- (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-tetrahydropyran-4-yl-propanoic acid (CAS 368866-34-6)
- Hydroxychloroquine Impurity 21 (CAS 927-55-9)
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- (S)-1-((S)-2-Ethyl-1,3,2-dioxaborolan-4-yl)ethane-1,2-diyl diacetate (CAS 74793-27-4)
- 1-(4-Methoxyphenyl)-2-phenyl-4-(phenylthio)-6,7-dihydro-1H-indole-5-carbaldehyde (CAS 477887-81-3)
- Potassium Trifluoro(hydroxymethyl)borate (CAS 1445848-23-6)
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- 4-Methoxy-1,2,5-thiadiazole-3-carbaldehyde (CAS 78741-15-8)
- Acetyl Hexapeptide-38 (CAS 1400634-44-7)
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