5,7-Difluoro-1-benzofuran-3-carboxylic acid CAS 1504512-59-7
| CAS No. | 1504512-59-7 |
| Molecular Formula | C9H4F2O3 |
| Molecular Weight | 198.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5,7-Difluoro-1-benzofuran-3-carboxylic acid (CAS 1504512-59-7) is a high-purity analytical reference standard with the molecular formula C9H4F2O3 and a molecular weight of 198.12 g/mol.
Based on its molecular formula C9H4F2O3, 5,7-Difluoro-1-benzofuran-3-carboxylic acid 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 198.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 5,7-Difluoro-1-benzofuran-3-carboxylic acid 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 | C9H4F2O3 |
| Molecular Weight | 198.12 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 4,6-Difluoro-1-benzofuran-2-carboxylic acid (CAS 1342225-97-1)
- 4,6-Difluoro-1-benzofuran-3-carboxylic acid (CAS 1517807-37-2)
- 4,5-Difluoro-1-benzofuran-2-carboxylic acid (CAS 1521284-52-5)
- 4,7-difluoro-1-benZofuran-3-carboxylic acid (CAS 1523352-94-4)
- 2,5-Difluoro-4-(1H-tetrazol-1-yl)phenol (CAS 1255574-38-9)
- 2-(2,6-Difluoro-4-nitrophenyl)acetonitrile (CAS 1280739-81-2)
- 5,6-Difluoro-2H-indazole-3-carboxylic acid (CAS 129295-33-6)
- 2-(2,6-Difluoro-3-nitrophenyl)acetonitrile (CAS 1369761-62-5)
Recommended Standards
- 6,7-Difluorobenzofuran-3-carboxylic acid (CAS 1489526-02-4)
- 3-(trifluoromethyl)-1,2,4-thiadiazole-5-carboxylic acid (CAS 1482147-72-7)
- 5-(trifluoromethyl)-1,2,3-thiadiazole-4-carboxylic acid (CAS 1466749-89-2)
- 5-(trifluoromethyl)-1,2,4-thiadiazole-3-carboxylic acid (CAS 1545805-10-4)
- 2-(5-(2-Aminoethyl)-1,2,4-oxadiazol-3-yl)-N,N-dimethylacetamide (CAS 1437434-57-5)
- 5,7-Dichloro-4-hydrazinylquinoline hydrochloride (CAS 1172490-52-6)
- 2-(1-Octyl-1H-indol-3-yl)acetonitrile (CAS 1849676-67-0)
- 3-Chloro-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (CAS 1554086-65-5)
- 8-Methylquinolin-3-ol (CAS 25369-30-6)
- 4-(Trifluoromethyl)pyrrolo[1,2-d][1,2,4]triazin-1(2H)-one (CAS 883948-73-0)
- 2-(Benzyloxycarbonylamino)-2-deoxy-D-glucose, 98% (CAS 16684-31-4)
- (S)-N1-(1-Benzylpiperidin-3-yl)-N1-cyclopropylethane-1,2-diamine (CAS 1353999-91-3)
- Ethyl 2-(1-methyl-6-oxo-1,6-dihydropyridin-3-yl)acetate (CAS 847375-01-3)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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