2,2'-O-脱水-5-甲基尿嘧啶核苷

3-(1-thyminyl)propanoic acid methyl ester

4-羟基-2-巯基-5-甲基嘧啶

2-氨基-5-甲基-4-嘧啶醇

1,3-dibenzyl-5-methylpyrimidine-2,4(1H,3H)-dione