3-Bromothiophene is a halogenated heterocyclic compound widely used as a key intermediate in pharmaceutical synthesis and organic electronics. This light-sensitive liquid has a boiling point of 150°C (lit.), density of 1.740 g/mL at 25°C, and refractive index of 1.591 (n20/D). It exhibits limited water solubility but is miscible with common organic solvents like chloroform and THF. Storage requires protection from light under inert atmosphere at 2-8°C. As a versatile building block, it participates in cross-coupling reactions (e.g., Suzuki, Stille) for constructing π-conjugated systems in organic semiconductors. Safety precautions include using acid-resistant PPE due to its irritant properties (GHS Category 2).
