850074-42-9
benzo[b]thiophene-2,6-dicarboxylic acid 2-ethyl ester 6-methyl ester
→
~74%
850074-43-0
2-ethoxycarbonyl-1-benzothiophene-6-carboxylic acid
153813-69-5
4-醛基-3-硝基苯甲酸甲酯