ethyl 3-diethoxyphosphoryloxybut-3-enoate

3-[4-氨基-2-(甲硫基)-1,3-噻唑-5-基]-3-氧代丙酸乙酯

triethyl 3-oxobutane-1,1,4-tricarboxylate

乙基3-[4-氨基-2-(乙硫基)-1,3-噻唑-5-基]-3-氧代丙酸酯

ethyl 2-(6,8-dibromoimidazo[1,2-a]pyrazin-2-yl)acetate