9-[4-acetoxy-3-(acetoxymethyl)butyl]-2-amino-6-[(4-chlorophenyl)sulfanyl]-9H-purine

鸟嘌呤

2-[2-(2-amino-6-chloropurin-9-yl)ethyl]propane-1,3-diol

2-(乙酰氧基甲基)-4-碘乙酸丁酯

2-氨基嘌呤