2-benzyl-4-(ethoxymethylidene)-1,3-oxazol-5-one

4-methyl-2H-triazolo[4,5-d]pyrimidin-7-one

2-(ethoxymethylidene)-N-(3-methoxyphenyl)-3-oxobutanamide

脲甲烯丙二醇二乙酯

5-tert-butyl-1H-[1,2,4]triazolo[1,5-a]pyrimidin-7-one