![1-phenyl-6H-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95875.gif)
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![4-cyclopropyl-1-phenyl-6H-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125665.gif)
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![6-(2-furfuryl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95957.gif)
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![1-phenyl-6-(2-pyridylmethyl)pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95959.gif)
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![1-phenyl-6-(3-pyridylmethyl)pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/96109.gif)
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![6-benzyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95952.gif)
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![6-(2-keto-2-pyrrolidino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95878.gif)
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![6-phenethyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95968.gif)
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![N-isoxazol-3-yl-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/95950.gif)
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![6-(2-keto-2-morpholino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95880.gif)
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![6-(2-keto-2-piperidino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95996.gif)
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![N-cyclopentyl-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/96010.gif)
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![6-phenacyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/96138.gif)
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![2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-(tetrahydrofurfuryl)acetamide](http://zinc12.docking.org/img/rings/95938.gif)
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![N-(2-furfuryl)-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/95935.gif)
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![2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/95895.gif)
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![6-[2-(azepan-1-yl)-2-keto-ethyl]-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/96116.gif)
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![N-cyclohexyl-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/96145.gif)
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![2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetic Acid Benzyl Ester](http://zinc12.docking.org/img/rings/96153.gif)
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![N-benzyl-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/95930.gif)
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![2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-phenethyl-acetamide](http://zinc12.docking.org/img/rings/95945.gif)
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![6-(2-indolin-1-yl-2-keto-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95890.gif)
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![N-(1,3-benzodioxol-5-yl)-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/95907.gif)
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![6-[2-(3,4-dihydro-2H-quinolin-1-yl)-2-keto-ethyl]-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95889.gif)
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![2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-piperonyl-acetamide](http://zinc12.docking.org/img/rings/95934.gif)
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![N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-(7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/95910.gif)
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![4-cyclopropyl-6-(2-furfuryl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125682.gif)
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![6-benzyl-4-cyclopropyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125680.gif)
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![4-cyclopropyl-6-(2-keto-2-pyrrolidino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125657.gif)
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![4-cyclopropyl-6-phenethyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125687.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-isoxazol-3-yl-acetamide](http://zinc12.docking.org/img/rings/125699.gif)
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![4-cyclopropyl-6-(2-keto-2-morpholino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125659.gif)
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![4-cyclopropyl-6-(2-keto-2-piperidino-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125690.gif)
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![N-cyclopentyl-2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/125673.gif)
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![4-cyclopropyl-6-phenacyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125703.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-(2-furfuryl)acetamide](http://zinc12.docking.org/img/rings/125675.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-(tetrahydrofurfuryl)acetamide](http://zinc12.docking.org/img/rings/125694.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/125667.gif)
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![6-[2-(azepan-1-yl)-2-keto-ethyl]-4-cyclopropyl-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125714.gif)
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![N-cyclohexyl-2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/125692.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetic Acid Benzyl Ester](http://zinc12.docking.org/img/rings/125683.gif)
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![N-benzyl-2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/125693.gif)
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![6-[2-keto-2-(4-phenylpiperazino)ethyl]-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95885.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-phenethyl-acetamide](http://zinc12.docking.org/img/rings/125677.gif)
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![6-[2-(4-benzylpiperidino)-2-keto-ethyl]-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/95886.gif)
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![4-cyclopropyl-6-(2-indolin-1-yl-2-keto-ethyl)-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125663.gif)
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![N-(1,3-benzodioxol-5-yl)-2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)acetamide](http://zinc12.docking.org/img/rings/125670.gif)
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![4-cyclopropyl-6-[2-(3,4-dihydro-2H-quinolin-1-yl)-2-keto-ethyl]-1-phenyl-pyrazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/125661.gif)
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![2-(4-cyclopropyl-7-keto-1-phenyl-pyrazolo[3,4-d]pyridazin-6-yl)-N-piperonyl-acetamide](http://zinc12.docking.org/img/rings/125674.gif)
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