(E)-methyl 5-hydroxy-5-(4-methoxycarbonylphenyl)pent-2-enoate

methyl 2-(α-hydroxy-4-methoxycarbonylbenzyl)but-3-enoate

5-乙基-2-甲基-吡啶

对苯二甲酸单甲酯

4-((E)-4-Carboxy-1-hydroxy-but-3-enyl)-benzoic acid methyl ester