3-(4-Fluorophenyl)isoxazole CAS 651059-64-2
| CAS No. | 651059-64-2 |
| Molecular Formula | C9H6FNO |
| Molecular Weight | 163.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 3-(4-Fluorophenyl)isoxazole (CAS 651059-64-2), a certified reference material (molecular formula C9H6FNO, MW 163.15 g/mol) for analytical method development and quality control.
The molecular framework of 3-(4-Fluorophenyl)isoxazole (C9H6FNO) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 3-(4-Fluorophenyl)isoxazole 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 | C9H6FNO |
| Molecular Weight | 163.15 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluorophenyl Standards
- 5-(2-Fluorophenyl)oxazole (CAS 1240321-68-9)
- 4-(2-Fluorophenyl)oxazole (CAS 127426-15-7)
- 3-(3-Fluorophenyl)-4H-1,2,4-triazole (CAS 1279202-08-2)
- 5-(4-Fluorophenyl)oxazole (CAS 128101-19-9)
- 5-(2-Fluorophenyl)isoxazole (CAS 138716-36-6)
- 5-(4-Fluorophenyl)isoxazole (CAS 138716-37-7)
- 5-(2-Fluorophenyl)-1H-1,2,4-triazole (CAS 1505273-47-1)
- 2-(2-Fluorophenyl)oxazole (CAS 178672-06-5)
Recommended Standards
- 3-(4-Fluorophenyl)-1H-1,2,4-triazole (CAS 95728-10-2)
- 3-Acetyl-4-fluorobenzonitrile (CAS 267875-54-7)
- 2-Fluoro-6-(1H-imidazol-2-yl)pyridine (CAS 438564-53-5)
- 3-Fluoro-2-(1H-imidazol-2-yl)pyridine (CAS 691886-16-5)
- Lyoniresinol (CAS 14464-90-5)
- 4-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-2-hydroxybenzoic acid (CAS 19232-43-0)
- ethyl 2-[(ethoxycarbonyl)amino]-3,3,3-trifluoro-2-isopropoxypropanoate (CAS 256332-88-4)
- N-(2-(3,4-Dichlorophenyl)benzo[d]oxazol-5-yl)-4-methyl-3-nitrobenzamide (CAS 331446-86-7)
- 2-(4-Oxopentyl)isoindoline-1,3-dione (CAS 3197-25-9)
- 2-Bromo-6-(4-(trifluoromethyl)piperidin-1-yl)benzonitrile (CAS 1159984-51-6)
- N-(4-Chlorophenyl) 2-bromobenzamide (CAS 66569-06-0)
- 2-Chloro-N-(tetrahydro-2H-pyran-4-yl)-6,7-dihydrothieno[3,2-d]pyrimidin-4-amine (CAS 1143575-84-1)
- 1-Amino-2,4,5-trimethylhexan-3-ol (CAS 1560510-41-9)
- Heme iron polypeptide(Hematin) (CAS 14875-96-8)
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