1-(3,5-Difluoro-2-methoxyphenyl)ethanone CAS 303043-97-2
| CAS No. | 303043-97-2 |
| Molecular Formula | C9H8F2O2 |
| Molecular Weight | 186.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 1-(3,5-Difluoro-2-methoxyphenyl)ethanone.
1-(3,5-Difluoro-2-methoxyphenyl)ethanone (CAS 303043-97-2), molecular formula C9H8F2O2 and molecular weight 186.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H8F2O2, 1-(3,5-Difluoro-2-methoxyphenyl)ethanone contains a carboxylic acid group, 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 186.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H8F2O2 |
| Molecular Weight | 186.16 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2-(2,4-Difluoro-3-methylphenyl)acetic acid (CAS 1000545-11-8)
- 1-(2,5-Difluoro-4-methoxyphenyl)ethanone (CAS 1010800-85-7)
- 2,2-Difluoro-2-(m-tolyl)acetic acid (CAS 1038247-17-4)
- 2,2-Difluoro-1-(4-methoxyphenyl)ethanone (CAS 114829-07-1)
- Methyl 2,4-difluoro-5-methylbenzoate (CAS 1162674-66-9)
- 1-(2,6-Difluoro-3-methoxyphenyl)ethan-1-one (CAS 1206593-23-8)
- Methyl 2,4-difluoro-3-methylbenzoate (CAS 1206675-31-1)
- Methyl 4,5-difluoro-2-methylbenzoate (CAS 1245515-60-9)
Recommended Standards
- 1-(2,6-Difluoro-4-methoxyphenyl)ethan-1-one (CAS 886498-84-6)
- 1,4-Dioxo-1,4-dihydronaphthalene-2-carbaldehyde (CAS 76916-86-4)
- [(2,4-difluorophenyl)methyl]urea (CAS 296277-71-9)
- 1-methoxycarbonyl-2-oxabicyclo[2.1.1]hexane-4-carboxylic acid (CAS 2385186-83-2)
- Methyl 4-oxo-3,4-dihydroquinazoline-8-carboxylate (CAS 1000578-10-8)
- 4-(3,4-Dichlorophenyl)-2-(4-methylphenyl)-4-oxobutanoic acid (CAS 344282-29-7)
- 5-(3,4-Diethoxyphenyl)-3-phenyl-1H-1,2,4-triazole (CAS 1416342-22-7)
- 3-Ethyl-5-(furan-3-ylmethylene)imidazolidine-2,4-dione (CAS 644957-10-8)
- 1-(Thiophen-2-yl)-3-((2-(thiophen-3-yl)pyridin-3-yl)methyl)urea (CAS 2034268-88-5)
- tert-Butyl 2-methyl-3-propylpiperazine-1-carboxylate (CAS 1035818-87-1)
- 1-(Bromomethyl)-4-propoxybenzene (CAS 2606-58-8)
- (4R)-Benzyl-4-deoxy-4-C-nitromethyl-β-D-arabinopyranoside (CAS 383173-71-5)
- 6,7-Dimethoxy-1H-indole (CAS 31165-13-6)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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