ethyl 1-cyclohexyl-3,4-dimethylphospholane-2-carboxylate

diethyl 2-(1-ethoxycarbonylimidazol-2-yl)-2H-imidazole-1,3-dicarboxylate

氯磺酸乙酯

ethyl N-phenyl-N-propan-2-ylcarbamate

ethyl N-(dimethylamino)-N-methylcarbamate