Brexpiprazole Impurity 156 CAS CATO-C4X-1131156
| CAS No. | CATO-C4X-1131156 |
| Molecular Formula | C30H38Cl2N2O4 |
| Molecular Weight | 561.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Brexpiprazole Impurity 156 (CAS CATO-C4X-1131156) is a certified pharmaceutical impurity reference standard with the molecular formula C30H38Cl2N2O4 and a molecular weight of 561.54 g/mol.
Brexpiprazole Impurity 156 (C30H38Cl2N2O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C30H38Cl2N2O4 |
| Molecular Weight | 561.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Brexpiprazole Standards
- Brexpiprazole impurity 117 (CAS CATO-C4X-1131117)
- Brexpiprazole Impurity 44 (CAS CATO-C4X-113144)
- Brexpiprazole Impurity 39 (CAS CATO-C4X-113139)
- Brexpiprazole Impurity 64 (CAS CATO-C4X-113164)
- Brexpiprazole Impurity 59 (CAS CATO-C4X-113159)
- Brexpiprazole Impurity 61 (CAS CATO-C4X-113161)
- Brexpiprazole impurity 115 (CAS CATO-C4X-1131115)
- Brexpiprazole Impurity 79 (CAS CATO-C4X-113179)
Recommended Standards
- Pigment Red 31 (CAS 6448-96-0)
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- Chloramphenicol Palmitate (CAS 530-43-8)
- Cytarabine Impurity 31 (CAS 169687-80-3)
- Decitabine Impurity 33 (CAS CATO-C4X-113733)
- Emedastine Impurity C38 (CAS 101953-62-2)
- Methyl 4-(difluoromethoxy)-5-methoxy-2-nitrobenzoate (CAS 923690-09-9)
- 3-Isopropyl-1-methyl-1H-pyrazole-4-carboxylic acid (CAS 113100-52-0)
- (4-Methoxyphenyl)(phenyl)iodonium trifluoromethanesulfonate (CAS 115298-63-0)
- Carbonylchlorotris(triphenylphosphine)rhodium (CAS 28912-94-9)
- 6-Chloro-2-(trifluoromethyl)oxazolo[5,4-b]pyridine (CAS 1196153-60-2)
- n-(1-(Naphthalen-1-yl)ethyl)acetamide (CAS 74743-04-7)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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