7-乙基鸟嘌呤

2-amino-9-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-7-methyl-3H-purin-9-ium-6-one

7-甲基鸟嘌呤

2-amino-5-(formylmethylamino)-4-(1-furanosylamino)pyrimidine-6(1H)-one

1,2'-Dimethylguanosine