Ethyl 5-ethylthiophene-2-carboxylate CAS 773135-08-3
| CAS No. | 773135-08-3 |
| Molecular Formula | C9H12O2S |
| Molecular Weight | 184.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 5-ethylthiophene-2-carboxylate.
Ethyl 5-ethylthiophene-2-carboxylate (CAS 773135-08-3) is a high-purity analytical reference standard with the molecular formula C9H12O2S and a molecular weight of 184.26 g/mol.
Ethyl 5-ethylthiophene-2-carboxylate (C9H12O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C9H12O2S |
| Molecular Weight | 184.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 3-ethylthiophene-2-carboxylate (CAS 132039-43-1)
- Ethyl 5-ethylthiophene-3-carboxylate (CAS 19163-51-0)
- 5-Ethylthiophene-2-sulfonamide (CAS 140646-34-0)
- N-Ethylthiophene-2-sulfonamide (CAS 358666-45-2)
- 64964-17-6 5-Ethylthiophene-2-carbonyl chloride DTXSID50489604 (CAS 64964-17-6)
- 95330-74-8 5-Ethylthiophene-3-carbonyl chloride DTXSID20538097 (CAS 95330-74-8)
- Methyl 3-ethylthiophene-2-carboxylate (CAS 189331-46-2)
- 5-Ethylthiophene-2-carbohydrazide (CAS 676348-42-8)
Recommended Standards
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