4,4'-Dibromo-3,3'-bithiophene
CAS: 5556-13-8
Category: Organic Intermediates
| Purity | Research Grade ≥98%; High-Purity Grade ≥99% |
| Molecular Formula | C8H4Br2S2 |
| Molecular Weight | 356.06 |
| Appearance | White to light yellow crystalline powder or solid |
| Packaging | 1 g, 5 g, 25 g aluminum foil bag or amber glass bottle; bulk quantities supplied in sealed nitrogen-filled containers |
| Testing Indicators | Appearance — Visual inspection; Identification — FTIR spectroscopy and 1H NMR / 13C NMR; Molecular structure confirmation — HRMS or LC-MS; Purity — HPLC-UV; Bromine content — ICP-OES or elemental analysis; Residual solvents — GC-MS according to ICH Q3C guidelines; Water content — Karl Fischer titration; Melting point — Capillary melting point determination; Elemental composition — CHNS elemental analysis. |
| Storage Notes | Store in a cool, dry, and well-ventilated area away from direct sunlight, moisture, and heat sources. Keep the container tightly sealed. For long-term storage, store under inert atmosphere such as nitrogen or argon. Avoid contact with strong oxidizing agents, strong acids, and strong bases. |
| Lead Time | 10 days |
Used as an important sulfur-containing heterocyclic intermediate in organic synthesis. It is mainly applied in the preparation of conjugated polymers, organic semiconductors, organic photovoltaic materials, OLED-related compounds, and functional thiophene derivatives. The dibrominated thiophene structure makes it a useful precursor for cross-coupling reactions such as Suzuki and Stille coupling.