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

ethyl 2-(3-nitrobenzylidene)-4-chloro-3-oxobutanoate

3-氨基巴豆酸乙酯

4-氯乙酰乙酸乙酯

间硝基苯甲醛