6-氨基-1,3-二甲基-2,4-二氧代-1,2,3,4-四氢嘧啶-5-甲醛

6-azido-1,3-dimethyl-5-formyluracil

N-(5-formyl-1,3-dimethyl-6-uracilyl)-S,S-diphenylsulfilimine

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

6-azido-1,3-dimethylpyrimidine-2,4-dione