diethyl benzo[1,2-b:4,5-b']dithiophene-4,8-dicarboxylate

2-(3-Thienylmethyl)-3-thiophenecarboxaldehyde

4,8-dichloro-benzo[1,2-b,4,5-b']dithiophene

2,5-dichloro-benzene-1,4-dithiol

1,4-dichloro-2,5-bis-(2,2-dimethoxy-ethylsulfanyl)-benzene