1 30A 6-benzyl-5-chloro-7-hydroxypyrazolo[1,5-a]pyrimidine-3-carboxylic acid 1.000 2 6BC 5-chloro-7-hydroxy-6-(phenylmethyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile 0.864 3 MW5 6-benzyl-5-chloro[1,2,4]triazolo[1,5-a]pyrimidin-7(3h)-one 0.773 4 Q9P Azolopyrimidine 0.773