2,5-Bis(trifluoromethyl)thiophene CAS 87721-33-3
| CAS No. | 87721-33-3 |
| Molecular Formula | C6H2F6S |
| Molecular Weight | 220.14 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.
2,5-Bis(trifluoromethyl)thiophene (CAS 87721-33-3) is a high-purity analytical reference standard with the molecular formula C6H2F6S and a molecular weight of 220.14 g/mol.
Structurally, 2,5-Bis(trifluoromethyl)thiophene (C6H2F6S) contains sulfur-containing functionality, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 220.14 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C6H2F6S |
| Molecular Weight | 220.14 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
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