5-(2,2,2-Trifluoroacetyl)-2-thiophenecarboxylic Acid Ethyl Ester CAS 898787-39-8
| CAS No. | 898787-39-8 |
| Molecular Formula | C9H7F3O3S |
| Molecular Weight | 252.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(2,2,2-Trifluoroacetyl)-2-thiophenecarboxylic Acid Ethyl Ester is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(2,2,2-Trifluoroacetyl)-2-thiophenecarboxylic Acid Ethyl Ester (CAS 898787-39-8), molecular formula C9H7F3O3S and molecular weight 252.21 g/mol, is a CATO reference standard with documented purity and traceability.
5-(2,2,2-Trifluoroacetyl)-2-thiophenecarboxylic Acid Ethyl Ester (C9H7F3O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
As a certified reference material (CRM), 5-(2,2,2-Trifluoroacetyl)-2-thiophenecarboxylic Acid Ethyl Ester 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 | C9H7F3O3S |
| Molecular Weight | 252.21 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Trifluoroacetyl Standards
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Recommended Standards
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