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6-Chloro-2-fluoropurine1651-29-2100 % similar 5,7-Dichloro-1H-imidazo[4,5-b]pyridine24485-01-643 % similar 7-Chloro-1H-imidazo(4,5-b)pyridine6980-11-638 % similar 4,5-Dichloroimidazole15965-30-736 % similar 2-Chloropurine1681-15-835 % similar 2-Amino-6-iodopurine19690-23-435 % similar 5-Chloro-3H-imidazo[4,5-B]pyridine52090-89-834 % similar 4,6-Dichloroimidazo[4,5-C]pyridine2589-12-033 % similar 4-Chloro-7H-pyrrolo[2,3-d]pyrimidine3680-69-132 % similar 6-Chloropurine87-42-332 % similar 2,4-Dichloro-5H-pyrrolo[3,2-D]pyrimidine63200-54-431 % similar 6-Chloro-4,5-pyrimidinediamine4316-98-730 % similar