2-氨基-6-氯嘌呤

5-[2-(2-amino-6-chloropurin-9-yl)ethyl]-2,2-dimethyl-1,3-dioxacyclohexane-4,6-dione

6-chloro-9-[2-(2,2-dimethyl-1,3-dioxan-5-yl)ethyl]purin-2-amine