![Benzo[b]thiophene](/upload/20251022/ebc0b2ef29863f2b9724a1b89abfe857.png)
Benzo[b]thiophene (thianaphthene) is a fused heterocyclic compound widely used as a key intermediate in pharmaceuticals (e.g., zileuton synthesis) and organic electronic materials. It exhibits a melting point of 32°C and boiling point of 221°C at 760 mmHg, with density of 1.148 g/cm³ (25°C). The compound is steam-volatile, soluble in organic solvents (ethanol/ether/acetone) but insoluble in water. Storage should be in cool, ventilated areas away from oxidizers. Safety precautions include using respiratory protection due to potential irritation (GHS Category 3). Its unique electronic structure makes it valuable for constructing π-conjugated systems in OLED materials.
