2,6-二氨基嘌呤

N,N-1H-嘌呤-2,6-二双乙酰胺

N,N-二苯基-氨基甲酸 2-(乙酰氨基)-9H-嘌呤-6-基酯

β-D-erythro-Pentofuranose, 3-deoxy-, 1,2-diacetate 5-benzoate