(2e)-4-(3,4-Difluorophenyl)-4-oxobut-2-enoic acid CAS 191014-72-9
| CAS No. | 191014-72-9 |
| Molecular Formula | C10H6F2O3 |
| Molecular Weight | 212.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, (2e)-4-(3,4-Difluorophenyl)-4-oxobut-2-enoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 212.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(2e)-4-(3,4-Difluorophenyl)-4-oxobut-2-enoic acid (CAS 191014-72-9) is a high-purity analytical reference standard with the molecular formula C10H6F2O3 and a molecular weight of 212.15 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (2e)-4-(3,4-Difluorophenyl)-4-oxobut-2-enoic 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 | C10H6F2O3 |
| Molecular Weight | 212.15 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.) | 2011 |
| Halogen Content | F-containing |
Related e Standards
- (2E)-4-(2,4-Difluorophenyl)-4-oxobut-2-enoic acid (CAS 1354707-64-4)
- 4-(3,4-difluorophenyl)-2-oxobut-3-enoic acid (CAS 1807901-46-7)
- 4-(2,4-Difluorophenyl)-4-oxobut-2-enoic acid (CAS 83844-25-1)
- 1-(2,6-Difluorophenyl)-2,2,2-trifluoroethan-1-ol (CAS 878204-73-0)
- 1-(2,6-Difluorophenyl)pentane-1,3-dione (CAS 1040075-32-8)
- 1-(2,6-Difluorophenyl)cyclobutanecarboxylic Acid (CAS 1215754-00-9)
- 1-(3,5-Difluorophenyl)cyclobutanecarboxylic Acid (CAS 1249568-55-5)
- 2-(2,6-Difluorophenyl)-2-methylcyclopropane-1-carboxylic acid (CAS 1250566-64-3)
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- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
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