6-chloro-9-(4-chlorobut-2-ynyl)purin-2-amine

2-amino-9-(4-hydroxybuta-1,2-dienyl)-3H-purin-6-one

9-((2-膦酰基甲氧基)乙基)鸟嘌呤

diethyl 2-[2-(2-aminopurin-9-yl)ethyl]propanedioate

[(2R)-1-(2-amino-6-oxo-3H-purin-9-yl)propan-2-yl]oxymethylphosphonic acid