![6-(2-furfuryl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390406.gif)
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![6-(2-thenyl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390407.gif)
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![5-phenyl-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/243726.gif)
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![6-(4-pyrimidylmethyl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/561620.gif)
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![6-benzyl-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390374.gif)
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![6-piperonyl-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390404.gif)
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![5-(5-phenyl-2-furyl)-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/236109.gif)
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![6-[(2-pyrrolidinopyrimidin-4-yl)methyl]-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/561708.gif)
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![6-[(2-morpholinopyrimidin-4-yl)methyl]-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/561786.gif)
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![6-[(2-piperidinopyrimidin-4-yl)methyl]-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/561749.gif)
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![5-(benzylthio)-6-(2-furfuryl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/391675.gif)
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![5-(benzylthio)-6-(2-thenyl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/391678.gif)
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![6-benzyl-5-(benzylthio)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390372.gif)
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![5-[(2-keto-2-piperidino-ethyl)thio]-6-(2-thenyl)-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390381.gif)
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![5-(benzylthio)-6-phenethyl-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/391664.gif)
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![2-[(6-benzyl-7-keto-1H-pyrazolo[4,3-d]pyrimidin-5-yl)thio]-N-cyclopentyl-acetamide](http://zinc12.docking.org/img/rings/390389.gif)
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![6-benzyl-5-[(2-keto-2-piperidino-ethyl)thio]-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/390380.gif)
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![2-[(6-benzyl-7-keto-1H-pyrazolo[4,3-d]pyrimidin-5-yl)thio]-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/390376.gif)
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![2-[(6-benzyl-7-keto-1H-pyrazolo[4,3-d]pyrimidin-5-yl)thio]-N-(2-cyclohexen-1-ylethyl)acetamide](http://zinc12.docking.org/img/rings/390384.gif)
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![5-(benzylthio)-6-piperonyl-1H-pyrazolo[4,3-d]pyrimidin-7-one](http://zinc12.docking.org/img/rings/391671.gif)
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