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2-bromo-3-hexylthiophene; CAS No.: 69249-61-2; 2-bromo-3-hexylthiophene. PROPERTIES: 2-bromo-3-hexylthiophene is a viscous liquid with a molecular weight of approximately 256.2 g/mol. It has a boiling point around 150-160 C at reduced pressure and a density of approximately 1.1 g/cm?. The compound is moderately soluble in common organic solvents like toluene and chloroform but is practically insoluble in water. The bromine substituent provides a site for cross-coupling reactions. For proper storage, keep in a tightly sealed container at room temperature away from heat and moisture. Safety: This compound may cause serious eye irritation. In case of contact with eyes, rinse cautiously with water for several minutes and remove contact lenses if present. Use explosion-proof ventilation and lighting if handling large quantities. APPLICATIONS: In materials science, 2-bromo-3-hexylthiophene serves as a monomer for creating conjugated polymers. The bromine substituent allows for cross-coupling reactions to form polythiophene backbones. In organic synthesis, it is used as a building block for creating bioactive molecules. The hexyl group provides solubility in organic media, while the thiophene ring contributes to -conjugation. In electronic materials, derivatives of this compound are explored for creating organic field-effect transistors. The combination of the thiophene ring and the hexyl group creates materials with balanced charge transport properties. These applications are supported by research in polymer chemistry journals and electronic materials publications.