2,5-Bis[(trimethylsilyl)ethynyl]thieno[3,2-b]thiophene

2,5-二[(三甲基硅烷基)乙炔基]噻吩并[3,2-b]噻吩

Also known as: Thieno[3,2-b]thiophene, 2,5-bis[2-(trimethylsilyl)ethynyl]-, (Thieno[3,2-b]thiophene-2,5-diyldi-2,1-ethynediyl)bis(trimethylsilane), Silane, 1,1'-(thieno[3,2-b]thiophene-2,5-diyldi-2,1-ethynediyl)bis[1,1,1-trimethyl-

2,5-Bis[(trimethylsilyl)ethynyl]thieno[3,2-b]thiophene (CAS 139896-65-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H20S2Si2 and a molecular weight of 332.631 g/mol. It is also known as Thieno[3,2-b]thiophene, 2,5-bis[2-(trimethylsilyl)ethynyl]-, (Thieno[3,2-b]thiophene-2,5-diyldi-2,1-ethynediyl)bis(trimethylsilane) and Silane, 1,1'-(thieno[3,2-b]thiophene-2,5-diyldi-2,1-ethynediyl)bis[1,1,1-trimethyl-. Key properties include a melting point of 213 °C, a boiling point of 374.8±42.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 180.5±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

139896-65-4

Jingsj CID

J-1327529-9

Molecular Formula

C₁₆H₂₀S₂Si₂

Chinese Name

2,5-二[(三甲基硅烷基)乙炔基]噻吩并[3,2-b]噻吩

Molecular Weight

332.631 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026