4-chloro-1,3-dimethyl-2,6-dioxopyrimidine-5-carbaldehyde

6-氨基二氢-1,3-二甲基-2,4(1H,3H) -嘧啶二酮

甲酸

N,N-二甲基乙酰胺

3,7-dimethylpyrido[2,3-d:6,5-d']dipyrimidine-2,4,6,8(1H,3H,7H,9H)-tetraone