3-氨乙基噻吩

diethyl 2-(thiophen-3-ylmethyl)propanedioate

4,5-二氢环戊并[b]噻吩-6-酮

3-(2,5-二溴噻吩-3-基)丙酸

(6-oxo-4,5-dihydrocyclopenta[b]thiophen-4-yl) acetate