1-(2,5-Difluoro-4-methylphenyl)ethanone CAS 178696-17-8
| CAS No. | 178696-17-8 |
| Molecular Formula | C9H8F2O |
| Molecular Weight | 170.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 170.16 g/mol gives 1-(2,5-Difluoro-4-methylphenyl)ethanone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(2,5-Difluoro-4-methylphenyl)ethanone (CAS 178696-17-8) is a high-purity analytical reference standard with the molecular formula C9H8F2O and a molecular weight of 170.16 g/mol.
Based on its molecular formula C9H8F2O, 1-(2,5-Difluoro-4-methylphenyl)ethanone contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 170.16 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.
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), 1-(2,5-Difluoro-4-methylphenyl)ethanone 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 | C9H8F2O |
| Molecular Weight | 170.16 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 4,7-difluoro-2,3-dihydro-1H-inden-1-ol (CAS 130408-17-2)
- 1-(3,6-Difluoro-2-methylphenyl)ethan-1-one (CAS 1379339-99-7)
- 1-(3,5-Difluoro-2-methylphenyl)ethan-1-one (CAS 1557818-59-3)
- 5,7-Difluoro-2,3-dihydro-1H-inden-1-ol (CAS 173996-15-1)
- 4,6-Difluoro-2,3-dihydro-1H-inden-1-ol (CAS 173998-55-5)
- 1-(2,4-Difluoro-5-methylphenyl)ethan-1-one (CAS 177211-27-7)
- 2,5-Difluoro-3-methylacetophenone (CAS 1803833-34-2)
- 3,4-Difluoro-2-methylacetophenone (CAS 1804417-43-3)
Recommended Standards
- 3-(Difluoromethyl)-2-methylbenzaldehyde (CAS 1783358-66-6)
- 1-(4-(Difluoromethyl)phenyl)ethan-1-one (CAS 179990-93-3)
- 5-(Difluoromethyl)-2-methylbenzaldehyde (CAS 1783358-63-3)
- methyl 5-(1-hydroxyethyl)furan-3-carboxylate (CAS 1803605-59-5)
- hexane-3-thiol (CAS 1633-90-5)
- (S)-2-Amino-N-(4-(methylthio)benzyl)propanamide (CAS 1353994-76-9)
- 1-(2-Aminoethoxy)-2-ethoxyethane hydrochloride (CAS 901380-91-4)
- (4-(Phenylthio)tetrahydro-2H-pyran-4-yl)methanamine (CAS 1447964-77-3)
- 7-Hydroxy-N-(5-methylpyridin-2-yl)-2-oxo-2H-chromene-3-carboxamide (CAS 484022-75-5)
- tert-butyl N-[cis-2-methylazetidin-3-yl]carbamate;hydrochloride (CAS 2007915-44-6)
- N,N＇-Dicyclohexylurea (CAS 2387-23-7)
- 6-Fluoro-8-iodo-2-methylquinazolin-4(3H)-one (CAS 1352717-93-1)
- Propofol Impurity 28 (CAS 40388-51-0)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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