3-(2-Chlorophenoxy)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one CAS 459419-19-3
| CAS No. | 459419-19-3 |
| Molecular Formula | C16H8ClF3O4 |
| Molecular Weight | 356.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2-Chlorophenoxy)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one (CAS 459419-19-3) is a high-purity analytical reference standard with the molecular formula C16H8ClF3O4 and a molecular weight of 356.68 g/mol.
Based on its molecular formula C16H8ClF3O4, 3-(2-Chlorophenoxy)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 356.68 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-(2-Chlorophenoxy)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one 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 | C16H8ClF3O4 |
| Molecular Weight | 356.68 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 |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
Related Chlorophenoxy Standards
- 3-(4-Chlorophenoxy)-7-hydroxy-2-(trifluoromethyl)-4h-chromen-4-one (CAS 263744-91-8)
- Methyl 4-(4-chlorophenoxy)-6-oxo-1-phenyl-1,6-dihydropyridazine-3-carboxylate (CAS 338756-21-1)
- 1-(2-Chlorophenoxy)-3-((2-methoxyphenyl)sulfonyl)propan-2-ol (CAS 478079-90-2)
- N-[4-(2-Chlorophenoxy)phenylsulfonyl]-DL-alanine (CAS 1008472-78-3)
- 3-((4-(2-Chlorophenoxy)phenyl)sulfonamido)propanoic acid (CAS 606945-29-3)
- Ethyl 5-(2-chlorophenoxy)-3-phenyl-1,2,4-triazine-6-carboxylate (CAS 338957-42-9)
- Ethyl 5-(4-chlorophenoxy)-3-phenyl-1,2,4-triazine-6-carboxylate (CAS 338957-35-0)
- 5-((4-Chlorophenoxy)methyl)-N-(3-methoxyphenyl)furan-2-carboxamide (CAS 879565-87-4)
Recommended Standards
- 2-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methoxy}-2,3-dihydro-1H-isoindole-1,3-dione (CAS 321430-50-6)
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- 2-(2-chloro-6-methylpyrimidin-4-yl)-5-[2-(trifluoromethoxy)phenyl]-1,3,4-oxadiazole (CAS 680216-49-3)
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- NS 9283 (CAS 913830-15-6)
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- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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