6-methyl-2H,3H,4H-oxepin-7-one

3-methylideneoxepan-2-one

2-methyl-1,2,5,6,7,8-hexahydropyrrolizin-3-one

3-氯-4-环丙氧基苯甲酸乙酯

异丙基4,4,4-三氟丁酸酯