dimethyl 2-(2-(2-aminopurine-9-yl)ethyl)malonate

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

2-氨基-6-氯嘌呤

2-amino-6-chloro-9-(ethyl 2-carboethoxybutanoate-4-yl)purine

9-(2-溴乙基)-6-氯-9h-嘌呤-2-胺