3-Ethoxy-1,2,4,5-tetrafluorobenzene CAS 42099-81-0
| CAS No. | 42099-81-0 |
| Molecular Formula | C8H6F4O |
| Molecular Weight | 194.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Ethoxy-1,2,4,5-tetrafluorobenzene (CAS 42099-81-0) is a high-purity analytical reference standard with the molecular formula C8H6F4O and a molecular weight of 194.13 g/mol.
Structurally, 3-Ethoxy-1,2,4,5-tetrafluorobenzene (C8H6F4O) contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 194.13 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Ethoxy-1,2,4,5-tetrafluorobenzene 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 | C8H6F4O |
| Molecular Weight | 194.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | F-containing |
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Recommended Standards
- 3,3-Difluoro-1-(methoxycarbonyl)cyclobutane-1-carboxylicacid (CAS 2168018-78-6)
- 3-Fluoro-5-(trifluoromethyl)anisole (CAS 261951-79-5)
- 2-Fluoro-3-methyl-5-(trifluoromethyl)phenol (CAS 2383817-73-8)
- 3-Fluoro-alpha-(trifluoromethyl)benzyl Alcohol (CAS 81577-10-8)
- 5-Fluoro-3-methylpyridine-2-boronic acid (CAS 2377606-62-5)
- 3-Methoxy-6-methylpyrazin-2-amine (CAS 89464-88-0)
- (E)-4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-3-Buten-2-ol Acetate (CAS 53319-91-8)
- p-Nitrophenyl palmitate (CAS 1492-30-4)
- 5-Amino-1-(4-chlorobenzyl)-N-(3-fluorophenyl)-1H-1,2,3-triazole-4-carboxamide (CAS 900013-58-3)
- 4-Methoxyphenyl 5-(1,2,3-thiadiazol-4-yl)thiophene-2-sulfonate (CAS 338400-13-8)
- Methyl diphenylcarbamodithioate (CAS 71195-52-3)
- ethyl 5-methyl-2-phenyl-1H-imidazole-4-carboxylate (CAS 77335-93-4)
- 1-(4-Hydroxyphenyl)-1H-pyrrole-2,5-dione (CAS 7300-91-6)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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