8-苯基茶碱

苯亚甲基苯乙酮

1,3-二甲基-8-异丙基-7H-嘌呤-2,6(1H,3H)-二酮

1,3-dimethyl-6-phenylpteridine-2,4-dione

1,3,6,7-tetramethylpteridine-2,4-dione