4-(2-甲基[1,3]二氧戊环-2-基)丁烷-2-酮

5-phenylmethoxypentan-2-one

3,7-dimethyl-1-(4-oxopentyl)purine-2,6-dione

1-(2-methyl-1,3-dioxolan-2-yl)hexan-3-one

3-(2-甲基-1,3-二氧戊环-2-基)丙醛