4-Ethynyl-2,5-difluorobenzoic acid CAS 2490398-41-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2490398-41-7 |
| Molecular Formula | C9H4F2O2 |
| Molecular Weight | 182.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethynyl-2,5-difluorobenzoic acid (CAS 2490398-41-7) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C9H4F2O2. Molecular weight: 182.12 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C9H4F2O2 |
| Molecular Weight | 182.12 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 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; 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.) | 2000 |
| Halogen Content | F-containing |
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Recommended Standards
- 3-(3,5-Difluorophenyl)propiolic acid (CAS 935475-83-5)
- 3-(3,4-Difluorophenyl)prop-2-ynoic acid (CAS 935475-82-4)
- Dimethyl (2R,3R)-2,3-difluorosuccinate (CAS 71974-84-0)
- 1-(2-Bromobenzyl)-4-(chloromethyl)-1H-1,2,3-triazole (CAS 1250209-85-8)
- Ethyl 6-bromo-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-1-carboxylate (CAS 161468-52-6)
- 5-Amino-1-(3-fluorobenzyl)-N-(4-fluorobenzyl)-1H-1,2,3-triazole-4-carboxamide (CAS 902557-10-2)
- tert-Butyl 6-isopropylnicotinate (CAS 1623003-12-2)
- 6-Bromo-7-chloro-1H-indazole (CAS 1427405-47-7)
- Ginsenoyne E (CAS 126146-63-2)
- FMRF-Like Peptide from snail Helix aspersa (CAS 98495-35-3)
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