5-[(3-甲氧基苯基氨基)亚甲基]-2,2-二甲基-1,3-二噁烷-4,6-二酮

5-[[(5-bromopyridin-2-yl)amino]methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

5-(anilinomethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione

甲酰基米氏酸

5-(氨基乙烯基)-2,2-二甲基-1,3-二氧烷-4,6-二酮