5-(5-bromo-2-thienyl)thiophene-2-carboxylic acid

2-ethenyl-5-thiophen-2-ylthiophene

5-(噻吩-2-基)噻吩-2-甲腈

5,5-二甲基-2,2-并噻吩

2-methyl-5-thiophen-2-ylthiophene