3-methyl-1-pyridin-4-ylbutan-2-one

4-甲基-2-苯基吡啶

3-methyl-1-pyridin-4-yl-2-pyridin-4-ylmethyl-butan-2-ol

三甲基乙酸乙酯

2,2-二甲基丙二酸单乙酯