Arotinolol Impurity 42 CAS 57797-77-0
| CAS No. | 57797-77-0 |
| Molecular Formula | C9H7NO2S3 |
| Molecular Weight | 257.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Arotinolol Impurity 42 (C9H7NO2S3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Arotinolol Impurity 42 (CAS 57797-77-0, C9H7NO2S3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
As a certified reference material (CRM), Arotinolol Impurity 42 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.
Physical & Chemical Properties
| Molecular Formula | C9H7NO2S3 |
| Molecular Weight | 257.35 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 3 |
Related Arotinolol Standards
- Arotinolol Impurity 36 (CAS 52561-15-6)
- Arotinolol Impurity 76 (CAS CATO-C4X-185476)
- Arotinolol impurity 28 (CAS CATO-C4X-185428)
- Arotinolol Impurity 35 (CAS CATO-C4X-185435)
- Arotinolol impurity 25 (CAS 96991-65-0)
- Arotinolol Impurity 11 (CAS 68257-90-9)
- Arotinolol impurity 26 (CAS 96991-51-4)
- Arotinolol Impurity 67 (CAS CATO-C4X-185467)
Recommended Standards
- Lesinurad Impurity 4 (CAS 1547295-10-2)
- Aprepitant impurity 28 (CAS 479679-98-6)
- Etoricoxib Impurity 76 (CAS CATO-C4X-108076)
- 2-((5-Amino-4-methyl-4h-1,2,4-triazol-3-yl)thio)-N-(pentan-3-yl)acetamide (CAS 1147762-53-5)
- Efinaconazole Impurity 19 (CAS 164650-45-7)
- Aztreonam impurity 119 (CAS CATO-C4X-1522119)
- Rociletinib Impurity N1 (CAS 165897-63-2)
- 3-((((1H-pyrazol-3-yl)methyl)amino)methyl)benzonitrile (CAS 1182975-59-2)
- Benzyl 3-[(tert-butoxycarbonyl)(methyl)amino]cyclobutylcarbamate (CAS 1353500-34-1)
- (4-Bromobenzyl)(cyclopentyl)sulfane (CAS 1343069-21-5)
- trans-2-(4-(Dimethylamino)phenyl)cyclohexanol (CAS 933674-51-2)
- N-Benzyl-3,5,6-trifluoropyridin-2-amine (CAS 189281-25-2)
- N-(4-bromo-3-methylphenyl)-2-((4-chlorophenyl)thio)acetamide (CAS 195383-27-8)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
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