T 8655 (OTTO) 2-(Tributylstannyl)thiophene, 97% Cas 54663-78-4 - used to synthesize diphenylquinoxaline monomer for the electrochromism polymers. T 8655 (OTTO) 2-(Tributylstannyl)thiophene, 97% Cas 54663-78-4 - used as a reactant in Stille coupling reaction.