tassium 4，4'-(2，6-dibromo-4H-cyclopenta[1，2-b:5，4-b']dithiophene-4，4-diyl)bis(butane-1-sulfonate)

tassium 4，4'-(2，6-dibromo-4H-cyclopenta[1，2-b:5，4-b']dithiophene-4，4-diyl)bis(butane-1-sulfonate) 95%