tetramethyl 2,2-dimethylpropane-1,1,3,3-tetracarboxylate

methyl 3,6,6-trimethyl-5-(methylcarbamoyl)-2,4-dioxo-3-azabicyclo[3.1.0]hexane-1-carboxylate

亚异丙基丙二酸二甲酯

丙二酸二甲酯

重氮甲烷