Ammoxetine Impurity 18 CAS CATO-C4X-335718
| CAS No. | CATO-C4X-335718 |
| Molecular Formula | C14H10F2O4 |
| Molecular Weight | 280.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H10F2O4, Ammoxetine Impurity 18 contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 280.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Ammoxetine Impurity 18 (CAS CATO-C4X-335718), a pharmacopoeial impurity reference standard (molecular formula C14H10F2O4, MW 280.22 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Ammoxetine 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 | C14H10F2O4 |
| Molecular Weight | 280.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Ammoxetine Standards
- Ammoxetine Impurity 17 (CAS CATO-C4X-335717)
- Ammoxetine Impurity 20 (CAS CATO-C4X-335720)
- Ammoxetine Impurity 22 (CAS CATO-C4X-335722)
- Ammoxetine Impurity 1 (CAS CATO-C4X-33571)
- Ammoxetine Impurity 13 (CAS CATO-C4X-335713)
- Ammoxetine Impurity 4 (CAS CATO-C4X-33574)
- Ammoxetine Impurity 3 (CAS CATO-C4X-33573)
- Ammoxetine Impurity 5 (CAS CATO-C4X-33575)
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- 5-{[(2,6-dichlorophenyl)methyl]sulfanyl}-1,3,4-thiadiazol-2-amine (CAS 522606-61-7)
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