3-Amino-1,2,4-triazine1120-99-6100 % similar 2-Aminopyrimidine109-12-646 % similar 6-Bromo-1,2,4-triazin-3-amine69249-22-538 % similar 2-Amino-4-methylpyrimidine108-52-137 % similar Isocytosine108-53-237 % similar 4-Methoxy-2-pyrimidinamine155-90-833 % similar 2,2′-Biimidazole492-98-832 % similar 1,3,5-Triazin-2-amine4122-04-731 % similar 1,3,5-Triazine-2,4-diamine504-08-531 % similar