2-Methyl-5-(thiophen-2-yl)thiophene CAS 18494-74-1
| CAS No. | 18494-74-1 |
| Molecular Formula | C9H8S2 |
| Molecular Weight | 180.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Methyl-5-(thiophen-2-yl)thiophene (CAS 18494-74-1), molecular formula C9H8S2 and molecular weight 180.29 g/mol, is a CATO reference standard with documented purity and traceability.
2-Methyl-5-(thiophen-2-yl)thiophene (C9H8S2) contains sulfur-containing functionality, an aromatic ring system. Its physicochemical properties are representative of its class; 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).
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 | C9H8S2 |
| Molecular Weight | 180.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 2 |
Related Methyl Standards
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- 3-Methyl-1-(thiophen-2-yl)pent-1-yn-3-ol (CAS 391669-54-8)
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