1-Acetyl-2-methyl-1H-pyrrol-3-carbonsaeure-ethylester

N-(diethoxy-2' ethyl) amino-3 butene-2 oate d'ethyle

ethyl 3-[(2,2-diethoxyethyl)amino]but-2-enoate

3-氨基巴豆酸乙酯

一氯乙醛