噻吩并[3,4-b]噻吩

2,3-bis(bromomethyl)thiophene

噻吩-2,3-二甲酸甲酯

2-(Methoxycarbonyl)thiophene-3-carboxylic acid

4H-环戊并[2,1-B:3,4-B']二噻吩-4-酮