5,6-Dimethoxypyrimidin-4-amine5018-45-131 % similar 4-Chloropyrido(3,2-d)pyrimidine51674-77-231 % similar 4-Chloro-1H-pyrazolo[3,4-d]pyrimidine5399-92-831 % similar 3-Amino-5-bromo-2-chloropyridine588729-99-131 % similar 4-Chloro-5H-pyrrolo[3,2-D] pyrimidine84905-80-631 % similar 4-Chlorofuro[2,3-D]pyrimidine918340-51-931 % similar 6-Amino-4(3H)-pyrimidinone1193-22-230 % similar 4-Amino-6-chloropyrimidine5305-59-930 % similar