Brexpiprazole Impurity 19 CAS 23967-57-9
| CAS No. | 23967-57-9 |
| Molecular Formula | C9H5ClO2S |
| Molecular Weight | 212.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Brexpiprazole Impurity 19 (CAS 23967-57-9, C9H5ClO2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H5ClO2S, Brexpiprazole Impurity 19 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 212.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures Brexpiprazole Impurity 19 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H5ClO2S |
| Molecular Weight | 212.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Brexpiprazole Standards
- Brexpiprazole impurity 01 (CAS 1423-61-6)
- Brexpiprazole Impurity 32 (CAS 5118-13-8)
- Brexpiprazole Impurity 137 (CAS 2050176-73-1)
- Brexpiprazole impurity 120 (CAS 53371-66-7)
- Brexpiprazole Impurity 113 (CAS 105685-06-1)
- Brexpiprazole Impurity 110 (CAS 433303-94-7)
- Brexpiprazole Impurity 1 (CAS 846038-18-4)
- Brexpiprazole impurity 114 (CAS 131540-81-3)
Recommended Standards
- Prasugrel Impurity 14 (CAS 178688-43-2)
- 5-(5-Chloro-2-thienyl)-1,2,4-triazin-3-amine (CAS 1155047-26-9)
- 898791-06-5 (3-Chloro-5-fluorophenyl)(cyclobutyl)methanone DTXSID40642544 (CAS 898791-06-5)
- 2-(5-Chlorothiophen-2-yl)pyrimidin-4(3H)-one (CAS 1156236-07-5)
- Brexpiprazole Impurity 49 (CAS 2116542-21-1)
- Oxcarbazepine EP Impurity M (CAS 2642430-32-6)
- Duloxetine Impurity 32 (CAS 2680527-91-5 (racemic))
- 4-Amino-2-chloro-5-methylpyrimidine, Technical grade >80% (CAS 14394-70-8)
- 1-(2-bromoethyl)azetidine (CAS 1240943-63-8)
- N-(6-Acetamido-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)propionamide (CAS 865161-12-2)
- N-(2-((4-Bromopyridin-2-yl)oxy)ethyl)acetamide (CAS 1001077-13-9)
- Benzyl N-(3-methylazetidin-3-yl)carbamate (CAS 1158758-81-6)
- Ethyl 5-Cyclopropylisoxazole-3-carboxylate (CAS 21080-81-9)
- Peptide Impurity (CAS CATO-CPTD788810)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com