3-(2,6-Difluorophenyl)-5-methylisoxazole-4-carboxylic acid CAS 1673-75-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1673-75-2 |
| Molecular Formula | C11H7F2NO3 |
| Molecular Weight | 239.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2,6-Difluorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 1673-75-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C11H7F2NO3. Molecular weight: 239.17 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C11H7F2NO3 |
| Molecular Weight | 239.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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 |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Difluorophenyl Standards
- Methyl 5-(2,4-Difluorophenyl)isoxazole-3-carboxylate (CAS 1105191-49-8)
- [5-(2,4-Difluorophenyl)isoxazol-3-yl]acetic acid (CAS 1105191-64-7)
- 5-[(2,5-Difluorophenyl)methyl]-1,2-oxazole-3-carboxylic Acid (CAS 1258503-80-8)
- 2-[2-(3,4-difluorophenyl)-1,3-oxazol-4-yl]acetic acid (CAS 1311316-26-3)
- 3-(2,3-Difluorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 1494042-42-0)
- 3-(2,4-Difluorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 334971-42-5)
- 1-(3,5-Difluorophenyl)-5-methyl-1h-1,2,3-triazole-4-carboxylic acid (CAS 1094411-40-1)
- 1-(3,4-difluorophenyl)-5-methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 1152513-29-5)
Recommended Standards
- 4-(difluoromethyl)-2-phenyl-1,3-oxazole-5-carboxylic acid (CAS 1803586-72-2)
- 6,7-Difluoro-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 144298-26-0)
- 2-(2-Cyano-3-(difluoromethyl)-5-formylphenyl)acetic acid (CAS 1805633-49-1)
- Ethyl 5-(difluoromethyl)-1-methyl-1H-pyrazole-3-carboxylate (CAS 1437312-22-5)
- Tert-butyl (Z)-2,3,5,8-tetrahydro-4H-1,4-oxazocine-4-carboxylate (CAS 2010092-56-3)
- 2-(n-Methylethylsulfonamido)-N-(5-methylisoxazol-3-yl)acetamide (CAS 1375958-20-5)
- 4-(1,3-Dithiolan-2-yl)-2-methoxy-6-nitrophenyl 2,5-dichlorobenzenesulfonate (CAS 298216-06-5)
- 4-Fluoro-N-hydroxy-1H-pyrrolo[2,3-c]pyridine-7-carboximidamide (CAS 446284-52-2)
- 5-Bromo-3-iodo-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-β]pyridine (CAS 1416713-91-1)
- Des-Ala35-Tirzepatide (CAS CATO-CPTD788939)
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