Flupentixol Impurity 18 CAS CATO-C4X-189518
| CAS No. | CATO-C4X-189518 |
| Molecular Formula | C19H18F3NO2S |
| Molecular Weight | 381.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Flupentixol Impurity 18.
Flupentixol Impurity 18 (CAS CATO-C4X-189518) is a certified pharmaceutical impurity reference standard with the molecular formula C19H18F3NO2S and a molecular weight of 381.41 g/mol.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution, Flupentixol Impurity 18 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 381.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Flupentixol Impurity 18 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 | C19H18F3NO2S |
| Molecular Weight | 381.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Flupentixol Standards
- Flupentixol Impurity 23 (CAS CATO-C4X-189523)
- Flupentixol Impurity 31 (CAS CATO-C4X-189531)
- Flupentixol EP Impurity A Enantiomer (CAS 2340-57-0)
- Flupentixol Impurity 17 (CAS CATO-C4X-189517)
- Flupentixol Impurity 19 (CAS CATO-C4X-189519)
- Flupentixol Impurity 28 (CAS CATO-C4X-189528)
- Flupentixol Impurity 45 (CAS CATO-C4X-189545)
- Flupentixol Impurity N15 (CAS 53772-82-0)
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