(4aR,4bS,8aS,8bR)-1,3,6,8-tetramethyltetrahydrocyclobuta[1,2-d:4,3-d']dipyrimidine-2,4,5,7(3H,4aH,4bH,6H)-tetraone

N,N-二甲基乙酰胺

1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl trifluoromethanesulfonate

1,3-dimethyl-5-phenylsulfanylpyrimidine-2,4-dione

1,3-dimethyl-5-(trifluorovinyl)uracil