2,6,8-三氯-7-甲基嘌呤

7-benzyl-2,6,8-trichloropurine

2,6,8-trichloro-7-(2-phenoxyethyl)purine

8-溴-3,7-二氢-3-甲基-7-(苯基甲基)-1H-嘌呤-2,6-二酮

3-(4-Chloro-phenyl)-8-methyl-1-phenyl-1,4-dihydro-8H-1,2,4a,6,8,9-hexaaza-fluorene-5,7-dione