methyl 5-hydroxy-3-oxooctanoate

6,6-dimethyloxane-2,4-dione

methyl 5-hydroxy-5-methyl-3-oxohexanoate

环氧乙烷基甲基乙酰乙酸酯

2,6-二甲基-3,5-二甲氧羰基-4-(4-二氟甲氧基苯基)-1,4-二氢吡啶