Thioguanine154-42-730 % similar 6-Amino-1-methyluracil2434-53-930 % similar 8-Mercaptoguanine28128-40-730 % similar 4-Chloro-6-methoxy-2-pyrimidinamine5734-64-530 % similar 6,7-Dimethylpterin611-55-230 % similar 2-(Trifluoromethyl)pyrimidine-4,6-diol672-47-930 % similar 4-Chloro-6-(1-methylethyl)-2-pyrimidinamine73576-33-730 % similar