Ammoxetine Impurity 4 CAS CATO-C4X-33574
| CAS No. | CATO-C4X-33574 |
| Molecular Formula | C13H9FO4 |
| Molecular Weight | 248.21 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 Ammoxetine Impurity 4.
CATO supplies Ammoxetine Impurity 4 (CAS CATO-C4X-33574), a pharmacopoeial impurity reference standard (molecular formula C13H9FO4, MW 248.21 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ammoxetine Impurity 4 (C13H9FO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 248.21 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 4 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 | C13H9FO4 |
| Molecular Weight | 248.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ＞95% |
| 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 13 (CAS CATO-C4X-335713)
- Ammoxetine Impurity 1 (CAS CATO-C4X-33571)
- Ammoxetine Impurity 5 (CAS CATO-C4X-33575)
- Ammoxetine Impurity 25 (CAS CATO-C4X-224425)
- Ammoxetine Impurity 15 (CAS CATO-C4X-335715)
- Ammoxetine Impurity 2 (CAS CATO-C4X-33572)
- Ammoxetine Impurity 17 (CAS CATO-C4X-335717)
- Ammoxetine Impurity 18 (CAS CATO-C4X-335718)
Recommended Standards
- Diphenyl Methylphosphonate (CAS 7526-26-3)
- Regorafenib Impurity 47 (CAS CATO-C4X-104747)
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- Regorafenib Impurity 44 (CAS CATO-C4X-104744)
- Nifekalant impurity 2 (CAS CATO-C4X-27972)
- Lacosamide Impurity 55 (CAS CATO-C4X-183055)
- Doxofylline Impurity 3 (CAS 1174289-18-9)
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- Fraision ethylether (CAS 65330-49-6)
- Epothilone D (CAS 189453-10-9)
- 2-Methyl-N-(4-methylbenzyl)-1-propanamine hydrochloride (CAS 1049678-05-8)
- 1-Methoxyphosphinan-4-one 1-oxide (CAS 57384-32-4)
- ((2R,3S)-1-Benzyl-3-phenylazetidin-2-yl)diphenylphosphine oxide (CAS 917967-47-6)
- Tau Peptide (273-284) trifluoroacetate salt (CAS 1663490-91-2)
Why CATO?
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com