![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2,3-dihydro-1,4-benzodioxin-5-ylmethyl Ester](http://zinc12.docking.org/img/rings/277783.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2,3-dihydro-1,4-benzodioxin-6-ylmethyl Ester](http://zinc12.docking.org/img/rings/277775.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2,3-dihydro-1,4-benzoxathiin-2-ylmethyl Ester](http://zinc12.docking.org/img/rings/277977.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2-(benzimidazol-1-yl)ethyl Ester](http://zinc12.docking.org/img/rings/277498.gif)
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![N-(2,3-dihydro-1,4-benzodioxin-5-ylmethyl)-7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/350785.gif)
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![N-[(7-keto-6H-isoxazolo[3,4-d]pyridazin-4-yl)methylene]indane-5-sulfonamide](http://zinc12.docking.org/img/rings/276894.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 3-quinolylmethyl Ester](http://zinc12.docking.org/img/rings/277898.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 1-naphthylmethyl Ester](http://zinc12.docking.org/img/rings/277579.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 6,7,8,9-tetrahydro-5H-benzocyclohepten-9-yl Ester](http://zinc12.docking.org/img/rings/277905.gif)
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![7-keto-N-(tetralin-1-ylmethyl)-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/412835.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 3-([1,2,4]triazolo[1,5-a]pyrimidin-2-yl)propyl Ester](http://zinc12.docking.org/img/rings/277529.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (3-keto-4H-1,4-benzoxazin-6-yl)methyl Ester](http://zinc12.docking.org/img/rings/277934.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2-(2-keto-1,3-benzoxazol-3-yl)ethyl Ester](http://zinc12.docking.org/img/rings/480494.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 3-(1,3-benzodioxol-5-yl)propyl Ester](http://zinc12.docking.org/img/rings/277779.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 3-(1,3-benzothiazol-2-yl)propyl Ester](http://zinc12.docking.org/img/rings/277601.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 3-(benzimidazol-1-yl)propyl Ester](http://zinc12.docking.org/img/rings/277790.gif)
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![N-[(7-keto-6H-isoxazolo[3,4-d]pyridazin-4-yl)methylene]naphthalene-2-sulfonamide](http://zinc12.docking.org/img/rings/276677.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid 2-[(2-keto-3,4-dihydro-1H-quinolin-6-yl)oxy]ethyl Ester](http://zinc12.docking.org/img/rings/480505.gif)
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![6-[[2-(2-thienyl)oxazol-4-yl]methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/88274.gif)
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![N-[(2-cyclopropylthiazol-4-yl)methyl]-7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/438734.gif)
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![6-(1,2,4-oxadiazol-5-ylmethyl)-4-phenyl-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/181243.gif)
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![N-[(1-cyclopropylpyrrolidin-3-yl)methyl]-7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/479123.gif)
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![6-[(2-phenylpyrrolidino)methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/168201.gif)
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![6-[(cyclopropylmethylamino)methyl]-4-phenyl-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/461516.gif)
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![6-[[(1-phenylcyclobutyl)amino]methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/166952.gif)
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![6-[[benzyl(cyclopropyl)amino]methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/433872.gif)
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![6-[[cyclohexyl(cyclopropylmethyl)amino]methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/167682.gif)
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![4-(3-pyrrolidinopiperidine-1-carbonyl)-6H-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/479517.gif)
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![4-(4-pyrrolidinopiperidine-1-carbonyl)-6H-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/479198.gif)
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![N-cyclohexyl-N-(cyclopropylmethyl)-7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/617715.gif)
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![3-cyclopropyl-6-(3-phenoxypropyl)isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/431831.gif)
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![4-phenyl-6-(piperidinomethyl)isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/441534.gif)
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![6-benzyl-4-phenyl-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/88261.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid [3-(tetrazol-1-yl)phenyl] Ester](http://zinc12.docking.org/img/rings/277254.gif)
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![7-keto-N-[[3-(2-thienyl)-1H-1,2,4-triazol-5-yl]methyl]-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/290256.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid [4-(1,2,4-oxadiazol-3-yl)phenyl] Ester](http://zinc12.docking.org/img/rings/276937.gif)
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![4-(4-morpholinopiperidine-1-carbonyl)-6H-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/469517.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (4-imidazol-1-ylphenyl) Ester](http://zinc12.docking.org/img/rings/277234.gif)
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![4-(2-phenylmorpholine-4-carbonyl)-6H-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/328841.gif)
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![4-phenyl-6-[(thiazol-5-ylmethylamino)methyl]isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/522301.gif)
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![4-[2-(4-phenylthiazol-2-yl)acetyl]-6H-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/277260.gif)
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![7-keto-N-(2-pyrrolidinophenyl)-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/501959.gif)
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![6-(1,4-diazepan-1-ylmethyl)-4-phenyl-isoxazolo[3,4-d]pyridazin-7-one](http://zinc12.docking.org/img/rings/167793.gif)
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![7-keto-N-(1-phenylcyclopentyl)-6H-isoxazolo[3,4-d]pyridazine-4-carboxamide](http://zinc12.docking.org/img/rings/579910.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (1-phenyltetrazol-5-yl)methyl Ester](http://zinc12.docking.org/img/rings/480502.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (1-phenyltriazol-4-yl)methyl Ester](http://zinc12.docking.org/img/rings/480504.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (3-phenyl-1,2,4-oxadiazol-5-yl)methyl Ester](http://zinc12.docking.org/img/rings/480551.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (5-phenyl-1,2,4-oxadiazol-3-yl)methyl Ester](http://zinc12.docking.org/img/rings/480554.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid (5-phenyl-1,3,4-oxadiazol-2-yl)methyl Ester](http://zinc12.docking.org/img/rings/480497.gif)
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![7-keto-6H-isoxazolo[3,4-d]pyridazine-4-carboxylic Acid [1-(4-pyrimidyl)-3-piperidyl] Ester](http://zinc12.docking.org/img/rings/345680.gif)
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