Ethyl 4-formylthiophene-2-carboxylate CAS 67808-69-9
| CAS No. | 67808-69-9 |
| Molecular Formula | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Ethyl 4-formylthiophene-2-carboxylate (CAS 67808-69-9), molecular formula C8H8O3S and molecular weight 184.21 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Ethyl 4-formylthiophene-2-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.21 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 2-formylthiophene-3-carboxylate (CAS 67808-70-2)
- Ethyl 3-formylthiophene-2-carboxylate (CAS 67808-72-4)
- Ethyl 4-formylthiophene-3-carboxylate (CAS 67808-74-6)
- Ethyl 5-formylthiophene-2-carboxylate (CAS 67808-65-5)
- Ethyl 5-formylthiophene-3-carboxylate (CAS 67808-67-7)
- 3-Formylthiophene-2-sulfonamide (CAS 1849260-59-8)
- 5-formylthiophene-2-sulfonamide (CAS 933730-46-2)
- METHYL 2-FORMYLTHIOPHENE-3-CARBOXYLATE (CAS 24647-82-3)
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