dimethyl thiophene-2,4-dicarboxylate

2,5-噻吩二甲酸甲酯

methyl 4-formylhept-6-enoate

methyl 4-formyl-4-(2-methoxycarbonylethyl)hept-6-enoate

methyl 3-(4-cyano-2-methoxyphenyl)prop-2-enoate