3-methoxy-2-sulfanylbenzaldehyde

7-甲氧基苯并[b]噻吩-2-羧酸

2-(2-formyl-6-methoxyphenyl)sulfanylacetic acid

7-甲氧基-1-苯并噻吩

7-hydroxy-1-benzothiophene-2-carboxylic acid