8-(二乙基氨基)-3,7-二氢-1,3,7-三甲基-1H-嘌呤-2,6-二酮

1,3,7-三甲基-8-(3-甲基丁基巯基)嘌呤-2,6-二酮

8-chloro-3-ethyl-1,7-dimethylpurine-2,6-dione

8-(dimethylamino)-1,3,7-trimethylpurine-2,6-dione

8-hydrazinyl-1,3,7-trimethylpurine-2,6-dione