9-(2-hydroxyethoxymethyl)-2-(methylamino)-3H-purin-6-one

2-amino-9-(2-hydroxyethoxymethyl)-1-methylpurin-6-one

2-[(2-amino-6-oxo-4,5-dihydro-1H-purin-9-yl)methoxy]ethyl 2-aminoacetate

9-[[2-(alpha-L-丙氨酰氧基)乙氧基]甲基]鸟嘌呤盐酸盐

2-[(2-amino-6-oxo-4,5-dihydro-1H-purin-9-yl)methoxy]ethyl 3-aminopropanoate