1,3-dimethylorotaldehyde diethyl acetal

6-(2-dimethylaminovinyl)-1,3-dimethyluracil

1,3,4-三甲基尿嘧啶

2,4-二羟基-6-甲基嘧啶

6-(dimethoxymethyl)-1,3-dimethylpyrimidine-2,4-dione