1-methoxycarbonyl-2-(4-hydroxybutyl)piperidine

吡啶

methyl 2-(4-(1-ethoxyethoxy)but-1-yn-1-yl)pyridine-1(2H)-carboxylate

2-(3-ethoxycarbonylpropyl)pyridine

2-吡啶甲酸乙酯