![2-[[4-(2-pyridyl)-1,4-diazepan-1-yl]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373120.gif)
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![2-[[4-(cyclopentanecarbonyl)piperazino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372624.gif)
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![2-[[4-(morpholinomethyl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372874.gif)
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![N-(cyclopropylmethyl)-1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]nipecotamide](http://zinc12.docking.org/img/rings/372912.gif)
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![2-[(4-benzylpiperazino)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372101.gif)
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![2-[(4-phenyl-1,4-diazepan-1-yl)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373030.gif)
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![2-[(2-phenethylpyrrolidino)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372975.gif)
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![1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-N-thiazol-2-yl-nipecotamide](http://zinc12.docking.org/img/rings/372982.gif)
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![2-[(4-benzoylpiperazino)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/167590.gif)
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![2-[[(4-morpholinobenzyl)amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372148.gif)
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![2-[[3-(piperidine-1-carbonyl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/375430.gif)
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![2-[[4-(2-cyclopentylacetyl)piperazino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372628.gif)
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![2-[[[phenyl(2-pyrimidyl)methyl]amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/370202.gif)
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![2-[[[phenyl(2-pyridyl)methyl]amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373114.gif)
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![2-[(benzhydrylamino)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372463.gif)
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![1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-N-(2-pyridyl)nipecotamide](http://zinc12.docking.org/img/rings/372966.gif)
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![2-[[4-(2-keto-2-piperazino-ethyl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/299172.gif)
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![1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-N-phenyl-nipecotamide](http://zinc12.docking.org/img/rings/372264.gif)
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![2-cyclopentyl-N-[1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-4-piperidyl]acetamide](http://zinc12.docking.org/img/rings/370041.gif)
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![2-[(4-benzoyl-1,4-diazepan-1-yl)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372634.gif)
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![N-cyclohexyl-1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]nipecotamide](http://zinc12.docking.org/img/rings/374091.gif)
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![1-cyclohexyl-3-[1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-4-piperidyl]urea](http://zinc12.docking.org/img/rings/188733.gif)
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![2-[4-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]piperazino]-N-phenyl-acetamide](http://zinc12.docking.org/img/rings/372890.gif)
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![N-cyclohexyl-2-[4-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]piperazino]acetamide](http://zinc12.docking.org/img/rings/298746.gif)
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![2-cyclohexyl-N-[1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]-4-piperidyl]acetamide](http://zinc12.docking.org/img/rings/370340.gif)
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![N-benzyl-1-[(3-keto-6,7-dihydro-5H-cyclopenta[c]pyridazin-2-yl)methyl]isonipecotamide](http://zinc12.docking.org/img/rings/372854.gif)
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![2-(1,3,4,9-tetrahydro-$b-carbolin-2-ylmethyl)-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373007.gif)
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![2-[[cyclopropyl(indan-1-yl)amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373045.gif)
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![2-[[2-(1,3-benzothiazol-2-yl)pyrrolidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/371814.gif)
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![2-[[4-(2-thienyl)-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372122.gif)
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![2-[[2-(1,3-benzothiazol-2-yl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372127.gif)
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![2-[[3-(1,3-benzoxazol-2-yl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372769.gif)
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![2-[(4-phenyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372168.gif)
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![2-[[2-(1-naphthyl)pyrrolidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373123.gif)
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![2-[[cyclopropyl(2-naphthylmethyl)amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/373187.gif)
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![2-[(4-phenyl-3,4-dihydro-1H-isoquinolin-2-yl)methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372503.gif)
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![2-[[4-(1-naphthyl)piperidino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/188841.gif)
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![2-[[benzyl(indan-1-yl)amino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/372958.gif)
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![2-[[4-(2-indan-5-yloxyethyl)piperazino]methyl]-6,7-dihydro-5H-cyclopenta[c]pyridazin-3-one](http://zinc12.docking.org/img/rings/461589.gif)
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