Brexpiprazole Impurity 38 CAS CATO-C4X-113138
| CAS No. | CATO-C4X-113138 |
| Molecular Formula | C38H42N4O4S |
| Molecular Weight | 650.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Brexpiprazole Impurity 38 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Brexpiprazole Impurity 38 (CAS CATO-C4X-113138) is a certified pharmaceutical impurity reference standard with the molecular formula C38H42N4O4S and a molecular weight of 650.83 g/mol.
Structurally, Brexpiprazole Impurity 38 (C38H42N4O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 20.0, corresponding to approximately 20 ring(s) or double-bond equivalent(s). With a molecular weight of 650.83 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C38H42N4O4S |
| Molecular Weight | 650.83 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole Impurity 95 (CAS CATO-C4X-113195)
- Brexpiprazole Impurity 98 (CAS CATO-C4X-113198)
- Brexpiprazole Impurity 150 (CAS CATO-C4X-1131150)
- Brexpiprazole Impurity 26 (CAS 2094559-58-5)
- Brexpiprazole Impurity 49 (CAS 2116542-21-1)
- Brexpiprazole Impurity 75 (CAS CATO-C4X-113175)
- Brexpiprazole Impurity 148 (CAS CATO-C4X-1131148)
- Brexpiprazole Impurity 144 (CAS CATO-C4X-1131144)
Recommended Standards
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- (2-Bromo-6-chloropyridin-4-yl)methanol (CAS 1227490-36-9)
- N-(9H-Fluoren-9-yl)acetamide (CAS 27215-65-2)
- Endo-Ala35-Tirzepatide (CAS CATO-CPTD788687)
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