Brexpiprazole Impurity 75 CAS CATO-C4X-113175
| CAS No. | CATO-C4X-113175 |
| Molecular Formula | C38H40N4O4S |
| Molecular Weight | 648.81 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Brexpiprazole Impurity 75 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.
CATO supplies Brexpiprazole Impurity 75 (CAS CATO-C4X-113175), a pharmacopoeial impurity reference standard (molecular formula C38H40N4O4S, MW 648.81 g/mol) used for the identification and quantification of trace impurities in APIs.
Brexpiprazole Impurity 75 (C38H40N4O4S) contains a nitrogen-containing heterocyclic scaffold, 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 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 | C38H40N4O4S |
| Molecular Weight | 648.81 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole Impurity 150 (CAS CATO-C4X-1131150)
- Brexpiprazole Impurity 26 (CAS 2094559-58-5)
- Brexpiprazole Impurity 49 (CAS 2116542-21-1)
- Brexpiprazole Impurity 38 (CAS CATO-C4X-113138)
- Brexpiprazole Impurity 95 (CAS CATO-C4X-113195)
- Brexpiprazole Impurity 98 (CAS CATO-C4X-113198)
- Brexpiprazole Impurity 148 (CAS CATO-C4X-1131148)
- Brexpiprazole Impurity 144 (CAS CATO-C4X-1131144)
Recommended Standards
- Glutathione Impurity 14 (CAS CATO-C4X-118514)
- Fulvestrant Impurity 21 (CAS 261506-24-5)
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- Fmoc-l-argininol(pmc) (CAS 213336-24-4)
- Semaglutide impurity 34 (CAS CATO-C4X-222634)
- Semaglutide impurity 106 (CAS CATO-C4X-2226106)
- Oseltamivir EP Impurity F HCl（Mixture of Diastereomers） (CAS 1052063-37-2（free base）)
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- 2,6-Dichloropyrimidine-4-carbaldehyde (CAS 933746-24-8)
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- [4-(4-Chloro-phenoxy)-phenyl]-methanol (CAS 93497-08-6)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
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