2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene] (CAS No.109857-81-0), its synonyms are 2,2'-(4-Bromobut-1-ene-1,1-diyl)bis(3-methylthiophene) ; Thiophene, 2,2'-(4-bromo-1-buten-1-ylidene)bis[3-methyl-