Contains varying amounts of anhydride.This is used in a Suzuki cross-coupling study of the conversion of tetrabromothiophenes to tetraarylthiophenes. This is also used in a study of palladium-catalyzed cross-coupline of (Z)-alkenylsilanolates with aryl chlorides. Used in the synthesis of oligoarenes by Suzuki-Miyaura palladium-catalyzed cross-coupling. Contains varying amounts of anhydride.