7-Benzyl-8-chloro-3-methyl-3,7-dihydropurine-2,6-dione

7-苄基-2,6-二氯-7h-嘌呤

8-溴-3,7-二氢-3-甲基-7-(苯基甲基)-1H-嘌呤-2,6-二酮

苄基氯

7-苄基-3-甲基黄嘌呤