Ethyl 5-fluoroisoxazole-4-carboxylate CAS 25786-81-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 25786-81-6 |
| Molecular Formula | C6H6FNO3 |
| Molecular Weight | 159.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 5-fluoroisoxazole-4-carboxylate (CAS 25786-81-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H6FNO3. Molecular weight: 159.12 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H6FNO3 |
| Molecular Weight | 159.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 6-Fluoro-3,5-dimethoxy-1,2,4-triazine (CAS 82736-99-0)
- rel-(2R,3R)-3-(Ethoxycarbonyl)oxirane-2-carboxylic acid (CAS 63734-73-6)
- 6-Amino-5-fluoro-1-methylpyrimidine-2,4(1H,3H)-dione (CAS 250658-21-0)
- 2-(1h-1,2,4-Triazol-1-yl)pyridine-4-carboximidamide hydrochloride (CAS 1421606-01-0)
- 1-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)methyl)-3-(2-isopropylphenyl)thiourea (CAS 326815-31-0)
- N-(4-((4-isopropylphenyl)amino)-4-oxobutyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxamide (CAS 956543-83-2)
- 6-Amino-5-(ethylamino)-1-methyl-2,4(1H,3H)-Pyrimidinedione (CAS 131598-62-4)
- 4-(3,5-Dimethyl-isoxazol-4-yl)-benzoic acid methyl ester (CAS 1188281-18-6)
- N-((1-Methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)propan-1-amine hydrochloride (CAS 1855945-50-4)
- Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) (CAS CATO-C4X-2226244)
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