| Rolipram | IC50 | 860.0 [1] |
| Rolipram | Ki | 4.5 [1] |
| Piclamilast | IC50 | 1.0 [1] |
| Piclamilast | Ki | 0.85 [1], 1.0 [2], 1.5 [3] |
| Cilomilast | IC50 | 100.0 [1] |
| Cilomilast | Ki | 38.0 [1] |
| Sildenafil | IC50 | 8300.0 [1] |
| 5-Cyclopentyloxy-1-(3,5-dichloropyridin-4-ylmethyl)-6-methoxy-phthalazine | IC50 | 52.48 [1], 53.0 [2] |
| 5-Cyclopentyloxy-1-(3,5-dichloropyridin-4-ylmethyl)-6-methoxy-phthalazine | Ki | 149.0 [1] |
| 4-(2-(3-(Cyclopentyloxy)-4-methoxyphenyl)-2-phenylethyl)pyridine | IC50 | 19.95 [1] |
| 4-(2-(3-(Cyclopentyloxy)-4-methoxyphenyl)-2-phenylethyl)pyridine | Ki | 60.0 [1] |
| Theophylline | IC50 | 81000.0 [1], 1780000.0 [2] |
| Theophylline | Ki | 56800.0 [1] |
| Amrinone | IC50 | 41000.0 [1], 101000.0 [2], 126000.0 [3], 150000.0 [4] |
| (R)-(-)-Rolipram | IC50 | 50.12 [1], 300.0 [2], 1400.0 [3] |
| Unii-G6gso9sdnj | IC50 | 0.16 [1], 1.0 [2], 11.0 [3], 160.0 [4] |
| CID 10125445 | IC50 | 794.33 [1] |
| CID 10125445 | Ki | 5011.87 [1] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-6-methoxy-4-[1,2,4]triazol-1-yl-phthalazine | IC50 | 239.88 [1], 241.0 [2] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-6-methoxy-4-[1,2,4]triazol-1-yl-phthalazine | Ki | 383.0 [1] |
| (5-Cyclopentyloxy-6-methoxy-phthalazin-1-yl)-(3,5-dichloro-pyridin-4-yl)-amine | IC50 | 58.88 [1], 59.0 [2] |
| (5-Cyclopentyloxy-6-methoxy-phthalazin-1-yl)-(3,5-dichloro-pyridin-4-yl)-amine | Ki | 95.0 [1] |
| 8-Cyclopentyloxy-4-[(3,5-dichloropyridin-4-yl)methyl]-7-methoxy-2-methylsulfonyl-1H-phthalazine | IC50 | 2.0 [1] |
| 8-Cyclopentyloxy-4-[(3,5-dichloropyridin-4-yl)methyl]-7-methoxy-2-methylsulfonyl-1H-phthalazine | Ki | 5.0 [1] |
| (3Ar,6aS)-5-cyano-5-(3-cyclopentyloxy-4-methoxyphenyl)-2,3,3a,4,6,6a-hexahydro-1H-pentalene-2-carboxylic acid | IC50 | 9.0 [1], 150.0 [2], 300.0 [3] |
| 1-(Cyclohexylmethyl)-N-(3,5-dichloropyridin-4-yl)-3-methylindole-6-carboxamide | IC50 | 100.0 [1] |
| 1-(Cyclohexylmethyl)-N-(3,5-dichloropyridin-4-yl)-3-methylindole-6-carboxamide | Ki | 120.0 [1] |
| 1-Benzyl-N-(3,5-dichloropyridin-4-yl)-3-methylindole-6-carboxamide | IC50 | 18.0 [1] |
| 1-Benzyl-N-(3,5-dichloropyridin-4-yl)-3-methylindole-6-carboxamide | Ki | 135.0 [1] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-6-methoxy-4-phenoxy-phthalazine | IC50 | 131.83 [1], 132.0 [2] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-6-methoxy-4-phenoxy-phthalazine | Ki | 436.0 [1] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-4-ethynyl-6-methoxy-phthalazine | IC50 | 93.0 [1], 93.33 [2] |
| 1-(3,5-Dichloro-pyridin-4-ylmethyl)-4-ethynyl-6-methoxy-phthalazine | Ki | 204.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenylpentyl)-6-methoxyphthalazine | IC50 | 30.0 [1], 30.2 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenylpentyl)-6-methoxyphthalazine | Ki | 320.0 [1] |
| Ethyl 2-[4-[(3,5-dichloropyridin-4-yl)methyl]-7-methoxy-1H-phthalazin-2-yl]-2-oxoacetate | IC50 | 112.2 [1], 113.0 [2] |
| Ethyl 2-[4-[(3,5-dichloropyridin-4-yl)methyl]-7-methoxy-1H-phthalazin-2-yl]-2-oxoacetate | Ki | 212.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenyl-1-pentynyl)-6-methoxyphthalazine | IC50 | 10.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenyl-1-pentynyl)-6-methoxyphthalazine | Ki | 71.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-acetyl-6-methoxy-3,4-dihydrophthalazine | IC50 | 51.0 [1], 51.29 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-acetyl-6-methoxy-3,4-dihydrophthalazine | Ki | 397.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenyl-1-pentenyl)-6-methoxyphthalazine | IC50 | 19.0 [1], 19.05 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenyl-1-pentenyl)-6-methoxyphthalazine | Ki | 164.0 [1] |
| 1-(3,5-Dichloropyridin-4-ylmethyl)-6-methoxy-4-pyrrolidin-1-yl-phthalazine | IC50 | 38.0 [1], 38.02 [2] |
| 1-(3,5-Dichloropyridin-4-ylmethyl)-6-methoxy-4-pyrrolidin-1-yl-phthalazine | Ki | 89.0 [1] |
| 5-Cyclopentyloxy-1-[(3,5-dichloropyridin-4-yl)methyl]-6-methoxy-3-oxidophthalazin-3-ium | IC50 | 41.69 [1], 42.0 [2] |
| 5-Cyclopentyloxy-1-[(3,5-dichloropyridin-4-yl)methyl]-6-methoxy-3-oxidophthalazin-3-ium | Ki | 121.0 [1] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-7-methoxy-N-methyl-1H-phthalazine-2-carboxamide | IC50 | 131.0 [1], 131.83 [2] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-7-methoxy-N-methyl-1H-phthalazine-2-carboxamide | Ki | 235.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-6-methoxy-3,4-dihydrophthalazine-3-carboxamide | IC50 | 36.0 [1], 36.31 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-6-methoxy-3,4-dihydrophthalazine-3-carboxamide | Ki | 63.0 [1] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-N-hydroxy-7-methoxy-1H-phthalazine-2-carboxamide | IC50 | 85.0 [1], 85.11 [2] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-N-hydroxy-7-methoxy-1H-phthalazine-2-carboxamide | Ki | 208.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-acetyl-5-(cyclopentyloxy)-6-methoxy-3,4-dihydrophthalazine | IC50 | 30.0 [1], 30.2 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-acetyl-5-(cyclopentyloxy)-6-methoxy-3,4-dihydrophthalazine | Ki | 128.0 [1] |
| 2-[4-[(3,5-Dichloro-1-oxidopyridin-1-ium-4-yl)methyl]-7-methoxyphthalazin-1-yl]-1,3-thiazole | IC50 | 3.98 [1], 4.0 [2] |
| 2-[4-[(3,5-Dichloro-1-oxidopyridin-1-ium-4-yl)methyl]-7-methoxyphthalazin-1-yl]-1,3-thiazole | Ki | 17.0 [1] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-7-methoxy-2-methylsulfonyl-1H-phthalazine | IC50 | 20.89 [1], 21.0 [2] |
| 4-[(3,5-Dichloropyridin-4-yl)methyl]-7-methoxy-2-methylsulfonyl-1H-phthalazine | Ki | 60.0 [1] |
| 1-(3,5-Dichloro-4-pyridylmethyl)-4-(2-thiazolyl)-6-methoxyphthalazine | IC50 | 14.0 [1], 14.13 [2] |
| 1-(3,5-Dichloro-4-pyridylmethyl)-4-(2-thiazolyl)-6-methoxyphthalazine | Ki | 34.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(cyclopentyloxy)-6-(difluoromethoxy)phthalazine | IC50 | 38.9 [1], 39.0 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(cyclopentyloxy)-6-(difluoromethoxy)phthalazine | Ki | 46.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenylpentoxy)-6-methoxyphthalazine | IC50 | 56.23 [1], 57.0 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(5-phenylpentoxy)-6-methoxyphthalazine | Ki | 13.0 [1] |
| 1-[4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazin-2-yl]-2-methyl-propan-1-one | IC50 | 25.0 [1], 25.12 [2] |
| 1-[4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazin-2-yl]-2-methyl-propan-1-one | Ki | 498.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(indan-2-yloxy)-6-methoxyphthalazine | IC50 | 30.0 [1], 30.2 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-5-(indan-2-yloxy)-6-methoxyphthalazine | Ki | 16.0 [1] |
| 1-[4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazin-2-yl]-propan-1-one | IC50 | 28.0 [1], 28.18 [2] |
| 1-[4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazin-2-yl]-propan-1-one | Ki | 237.0 [1] |
| 1-(3,5-Dichloro-4-pyridylmethyl)-4-morpholino-6-methoxyphthalazine | IC50 | 131.83 [1], 132.0 [2] |
| 1-(3,5-Dichloro-4-pyridylmethyl)-4-morpholino-6-methoxyphthalazine | Ki | 452.0 [1] |
| 4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazine-2-carboxylic acid methyl ester | IC50 | 72.0 [1], 72.44 [2] |
| 4-(3,5-Dichloro-pyridin-4-ylmethyl)-7-methoxy-1H-phthalazine-2-carboxylic acid methyl ester | Ki | 199.0 [1] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-4-phenyl-6-methoxyphthalazine | IC50 | 37.0 [1], 37.15 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-4-phenyl-6-methoxyphthalazine | Ki | 271.0 [1] |
| 2-[4-[2,3-Bis(hydroxymethyl)-6,7-dimethoxynaphthalen-1-yl]pyridin-2-yl]-4-pyridin-3-ylphthalazin-1-one | IC50 | 0.63 [1], 0.7 [2] |
| 2-[4-[2,3-Bis(hydroxymethyl)-6,7-dimethoxynaphthalen-1-yl]pyridin-2-yl]-4-pyridin-3-ylphthalazin-1-one | Ki | 3.5 [1] |
| Tadalafil | IC50 | 9200.0 [1], 10000.0 [2] |
| Zaprinast | IC50 | 10000.0 [1], 53000.0 [2] |
| Enoximone | IC50 | 2900.0 [1], 5000.0 [2], 150000.0 [3] |
| Roflumilast | IC50 | 0.3 [1], 0.8 [2] |
| Zardaverine | IC50 | 158.49 [1], 800.0 [2] |
| Denbufylline | IC50 | 0.17 [1], 170.0 [2] |
| Denbufylline | Ki | 44900.0 [1] |
| N-(3,5-Dichloro-1-oxido-4-pyridinyl)-8-methoxy-2-(trifluoromethyl)-5-quinoline carboxamide | IC50 | 59.98 [1], 60.0 [2] |
| N-(3,5-Dichloropyridin-4-yl)-8-methoxy-2-(trifluoromethyl)quinoline-5-carboxamide | IC50 | 51.0 [1], 51.05 [2] |
| CI-1018 | IC50 | 1100.0 [1], 1140.0 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-benzoyl-6-methoxy-3,4-dihydrophthalazine | IC50 | 30.0 [1], 30.2 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-6-methoxy-7-(cyclopentyloxy)phthalazine | IC50 | 186.0 [1], 186.21 [2] |
| 2-[4-[3-(Hydroxymethyl)-6,7-dimethoxynaphthalen-1-yl]pyridin-2-yl]-4-pyridin-3-ylphthalazin-1-one;hydrochloride | IC50 | 0.7 [1] |
| 2-[4-[3-(Hydroxymethyl)-6,7-dimethoxynaphthalen-1-yl]pyridin-2-yl]-4-pyridin-3-ylphthalazin-1-one;hydrochloride | Ki | 3.0 [1] |
| 2-Acetyl-N-(3,5-dichloropyridin-4-yl)-7-methoxy-1-benzofuran-4-carboxamide | IC50 | 1.0 [1], 1.6 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-3-(phenylacetyl)-6-methoxy-3,4-dihydrophthalazine | IC50 | 12.0 [1], 12.02 [2] |
| 1-(3,5-Dichloro-4-pyridinylmethyl)-4-(phenylethynyl)-6-methoxyphthalazine | IC50 | 47.86 [1], 48.0 [2] |
| Bcamp | IC50 | 7700.0 [1], 40000.0 [2] |
| Vardenafil | IC50 | 3800.0 [1], 4500.0 [2] |
| 8-(4-Chlorophenylthio)-cAMP | IC50 | 22000.0 [1], 200000.0 [2] |
| 4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone | IC50 | 4800.0 [1], 26000.0 [2] |