9-(2-trimethylsilyloxyethoxymethyl)guanine

2-chloro-9-(2-hydroxy-ethoxymethyl)-1,9-dihydro-purin-6-one

2-((2-bromo-6-oxo-1H-purin-9(6H)-yl)methoxy)ethyl acetate

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

N,9-二乙酰鸟嘌呤