1 EXP 2-{[(3-bromophenyl)methyl]amino}-5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7(6h)-one 1.000 2 4VR 2-[(4-bromobenzyl)amino]-5-propyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4h)-one 0.826 3 EXJ (3r)-3-(3-chlorophenyl)-3-[(5-methyl-7-oxo-6,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)amino]propanenitrile 0.792