5-methyl-2-carbomethoxy-2,5-dihydrothiophene-1,1-dioxide

methyl bis(2,4-difluorophenyl)phosphonoacetate

三甲基膦酰基乙酸酯

重氮甲烷

Methyl (trans,E)-3-(2-Methyl-5,8-dioxaspiro<3.4>oct-1-yl)-2-propenoate