diethyl 2-(chloromethyl)-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

ethyl 2-formylfuran-3-carboxylate

6-(diethoxymethyl)-2-sulfanylidene-1H-pyrimidin-4-one

2-氨基-6-(二乙氧基甲基)-4(1H)-吡啶酮

1,1-二乙氧基丙酮