2,5-噻吩二羧酸

3,4-二羟基噻吩-2,5-二羧酸二乙基酯二钠盐

3,4-diphenylthiophene-2,5-dicarboxylic acid

ethyl 2-(2-ethoxy-2-oxoethyl)sulfonylacetate

2,3-二氢-噻吩并[3,4-b]-1,4-二噁英-5,7-二羧酸二乙酯