| Milrinone | IC50 | 310000.0 [1] |
| 4,5-Dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2H)-pyridazinone | IC50 | 1000000.0 [1] |
| Amrinone | IC50 | 1000000.0 [1] |
| Imazodan | IC50 | 1000000.0 [1] |
| Sildenafil | IC50 | 270.0 [1], 350.0 [2], 400.0 [3], 1100.0 [4], 1500.0 [5] |
| Rolipram | IC50 | 100000.0 [1], 200000.0 [2] |
| Rolipram | Ki | 200000.0 [1] |
| Zaprinast | IC50 | 1100.0 [1], 6000.0 [2], 32200.0 [3] |
| 6-(4-Imidazol-1-yl-phenyl)-2H-pyridazin-3-one | IC50 | 580000.0 [1], 660000.0 [2] |
| 6-[4-(1H-Imidazol-2-yl)-phenyl]-2H-pyridazin-3-one | IC50 | 330000.0 [1], 460000.0 [2] |
| 6-(3-Imidazol-1-yl-phenyl)-4,5-dihydro-2H-pyridazin-3-one | IC50 | 930000.0 [1], 1000000.0 [2] |
| 6-(4-(1H-Imidazol-1-yl)phenyl)-5-methylpyridazin-3(2H)-one | IC50 | 660000.0 [1], 1000000.0 [2] |
| Theophylline | IC50 | 320000.0 [1], 356000.0 [2] |
| Dipyridamole | IC50 | 45000.0 [1], 100000.0 [2] |
| 3-Isobutyl-1-methylxanthine | IC50 | 3400.0 [1], 6300.0 [2] |
| Papaverine | IC50 | 9000.0 [1], 21600.0 [2] |
| Tadalafil | IC50 | 10000.0 [1] |
| Vardenafil | IC50 | 230.0 [1], 300.0 [2] |
| 4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone | IC50 | 250000.0 [1], 300000.0 [2] |
| 1-(3-Chlorophenylamino)-4-phenylphthalazine | IC50 | 100000.0 [1] |
| 1-(3-Chlorophenylamino)-4-phenylphthalazine | Ki | 9500.0 [1] |
| 4-((3,4-(Methylenedioxy)benzyl)amino)-6,7,8-trimethoxyquinazoline | IC50 | 5500.0 [1] |
| Tetrahydrobenximidazole | IC50 | 75000.0 [1], 85000.0 [2] |
| 6-(4-Imidazol-1-yl-phenyl)-4-methyl-4,5-dihydro-2H-pyridazin-3-one | IC50 | 1000000.0 [1] |
| 6-(4-Imidazol-1-yl-phenyl)-2-methyl-4,5-dihydro-2H-pyridazin-3-one | IC50 | 1000000.0 [1] |
| 3(2H)-Pyridazinone, 5-ethyl-4,5-dihydro-6-[4-(1H-imidazol-1-yl)phenyl]- | IC50 | 1000000.0 [1] |
| 4,5-Dihydro-6-[4-(2-methyl-1H-imidazol-1-yl)phenyl]-3(2H)-pyridazinone | IC50 | 530000.0 [1], 790000.0 [2] |
| 4,5-Dihydro-6-[4-(4-hydroxymethyl-1H-imidazol-1-yl)phenyl]-3(2H)-pyridazinone | IC50 | 1000000.0 [1] |
| 6-(4-Benzoimidazol-1-yl-phenyl)-4,5-dihydro-2H-pyridazin-3-one | IC50 | 220000.0 [1], 280000.0 [2] |
| 4,5-Dihydro-6-[4-(4,5,6,7-tetrahydro-1H-benzimidazol-1-yl)phenyl]-3(2H)-pyridazinone | IC50 | 140000.0 [1], 180000.0 [2] |
| 4-Amino-6-(4-imidazol-1-ylphenyl)-2H-pyridazin-3-one | IC50 | 500000.0 [1] |
| 6,7-Dimethoxy-9-(3,4,5-trimethoxy-phenyl)-3H-naphtho[2,3-c]furan-1-one | IC50 | 820.0 [1], 9000.0 [2] |
| 4,5-Dihydro-6-[4-(2-ethyl-4-methyl-1H-imidazol-1-yl)phenyl]-3(2H)-pyridazinone | IC50 | 80000.0 [1], 86000.0 [2] |
| [3-Hydroxymethyl-6,7-dimethoxy-1-(3,4,5-trimethoxy-phenyl)-naphthalen-2-yl]-methanol | IC50 | 18000.0 [1], 60000.0 [2] |
| 4-(4-Imidazol-1-ylphenyl)-4a,5,6,7,8,8a-hexahydro-2H-phthalazin-1-one | IC50 | 380000.0 [1], 550000.0 [2] |
| 5-(4-Imidazol-1-yl-phenyl)-6-methyl-2-oxo-1,2-dihydro-pyridine-3-carbonitrile | IC50 | 24000.0 [1], 38800.0 [2] |
| 5-(4-Imidazol-1-ylphenyl)-6-methyl-2-oxo-3,4-dihydro-1H-pyridine-3-carbonitrile | IC50 | 39000.0 [1], 130000.0 [2] |
| Cilostazol | IC50 | 1000000.0 [1] |
| Vinpocetine | Ki | 14000.0 [1] |
| Enoximone | IC50 | 1000000.0 [1] |
| (2R,3S)-3-(6-Amino-9H-purin-9-yl)nonan-2-ol | Ki | 200000.0 [1] |
| Cilomilast | IC50 | 10000.0 [1] |
| Sulmazole | IC50 | 1000000.0 [1] |
| Cilostamide | Ki | 22000.0 [1] |
| Etazolate | Ki | 60000.0 [1] |
| Idoxifene | IC50 | 1500.0 [1] |
| 8-Methoxymethyl-3-isobutyl-1-methylxanthine | IC50 | 5200.0 [1] |
| Oxagrelate | Ki | 10000.0 [1] |
| Sodium;1-[4-(1,3-benzodioxol-5-ylmethylamino)-6-chloroquinazolin-2-yl]piperidine-4-carboxylate | IC50 | 4700.0 [1] |
| Methyl 2-(4-aminophenyl)-1-oxo-7-(pyridin-2-ylmethoxy)-4-(3,4,5-trimethoxyphenyl)isoquinoline-3-carboxylate;sulfuric acid | IC50 | 3000.0 [1] |
| (2S,3R)-3-(6-Amino-9H-purin-9-yl)nonan-2-ol | IC50 | 16000.0 [1] |
| Bufrolin | IC50 | 16000.0 [1] |
| T 0156 Hydrochloride | IC50 | 100000.0 [1] |
| 5-(2-Ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one | IC50 | 790.0 [1] |
| 1-Isoamyl-3-isobutylxanthine | IC50 | 86000.0 [1] |
| 4-Acetyl-1-methyl-7-(4-pyridyl)-5,6,7,8-tetrahydro-3(2H)-isoquinolinone | IC50 | 409000.0 [1] |
| 1-(4-Iodophenyl)-1-[4-(2-dimethylaminoethoxy)phenyl]-2-phenyl-1-butene | IC50 | 2300.0 [1] |
| N-(1,3-Benzodioxol-5-ylmethyl)-6-methoxy-4-quinazolinamine | IC50 | 100000.0 [1] |
| N*2*-(2-Methoxy-phenyl)-4'-methyl-[4,5']bithiazolyl-2,2'-diamine | IC50 | 2500.0 [1] |
| N-(1,3-Benzodioxol-5-ylmethyl)-6-chloro-4-quinazolinamine | IC50 | 100000.0 [1] |
| N-(4-Hydroxycarbamoylmethyl-thiazol-2-yl)-benzamide | IC50 | 10000.0 [1] |
| 4-[8-(2,1,3-Benzoxadiazol-5-yl)-1,7-naphthyridin-6-yl]benzoic acid | IC50 | 10000.0 [1] |
| 1H-Imidazo(4,5-b)pyridine, 2-(2,4-dimethoxyphenyl)- | IC50 | 265000.0 [1] |
| 1H-Purine-2,6-dione, 3,7-dihydro-1-methyl-3-(2-methylpropyl)-7-(phenylmethyl)- | IC50 | 4400.0 [1] |
| 4-(3-(1-Acetylpiperidine-4-yl)pyrazine-2-yloxy)phenyl(1H-benzoimidazole-2-yl)methanone | IC50 | 30000.0 [1] |
| 9-(2-Fluorobenzyl)-N-methyl-2-(trifluoromethyl)-9H-purin-6-amine | IC50 | 40000.0 [1] |
| 3,4-Dipropyl-7,8-dihydroimidazo[2,1-f]purin-5-one | IC50 | 100000.0 [1] |
| 2-(2-Ethoxyphenyl)-5-methyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one | IC50 | 300.0 [1] |
| N-Desmethylvardenafil | IC50 | 300.0 [1] |
| 7-(2-Hydroxy-3-(naphthalen-2-yloxy)propyl)-8-mercapto-3-methyl-1H-purine-2,6(3H,7H)-dione | IC50 | 300.0 [1] |
| 1-Butyl-3-propyl-5,7-dihydro-4H-purine-2,6-dione | IC50 | 149000.0 [1] |
| 1-[3-[4-[(E)-1-(4-Iodophenyl)-2-phenyl-1-butenyl]phenoxy]propyl]pyrrolidine | IC50 | 1100.0 [1] |
| 3-(Cyclopentyloxy)-N-(2-fluorophenyl)-4-methoxybenzamide | IC50 | 1000000.0 [1] |
| 3-Cyclopentyloxy-N-(2,6-dichlorophenyl)-4-methoxybenzamide | IC50 | 1000000.0 [1] |
| 3-[4-[(E)-1-(4-Iodophenyl)-2-phenylbut-1-enyl]phenoxy]-N,N-dimethylpropan-1-amine | IC50 | 2000.0 [1] |
| 3-Cyclopentyloxy-4-methoxy-N-(2-trifluoromethyl-phenyl)-benzamide | IC50 | 1000000.0 [1] |
| N-[(11R)-6-Methoxy-12-oxo-9-phenyl-1,10-diazatricyclo[6.4.1.04,13]trideca-4(13),5,7,9-tetraen-11-yl]pyridine-4-carboxamide | IC50 | 16000.0 [1] |
| 1,8-Dimethyl-3-isobutylxanthine | IC50 | 1900.0 [1] |
| 2-(5-Methylthiophen-2-yl)-N-(4-sulfamoylphenyl)quinoline-4-carboxamide | IC50 | 2500.0 [1] |
| 7-Methyl-5-(2-methylpropyl)-1H-imidazo[4,5-g]quinazoline-6,8-dione | IC50 | 40000.0 [1] |
| 8-Methyl-6-(2-methylpropyl)-3H-imidazo[4,5-f]quinazoline-7,9-dione | IC50 | 8400.0 [1] |
| 4-[(3-Chloro-4-methoxyphenyl)methylamino]-8-cyclopropyl-3-(hydroxymethyl)quinoline-6-carbonitrile | IC50 | 10000.0 [1] |
| 2-[4-[6,7-Diethoxy-2,3-bis(hydroxymethyl)naphthalen-1-yl]pyridin-2-yl]-4-pyridin-3-ylphthalazin-1-one | IC50 | 10000.0 [1] |
| 3-Cyclopentyloxy-N-(2,6-difluorophenyl)-4-methoxybenzamide | IC50 | 1000000.0 [1] |
| 5-[[5-(4-Chlorophenyl)-3-methyl-1,3,4-thiadiazol-2-ylidene]amino]-2-fluorobenzoic acid | IC50 | 21580.0 [1] |
| E-1-(4-(4-(Dimethylamino)butoxy)phenyl)-1-(4-iodophenyl)-2-phenyl-1-butene | IC50 | 2200.0 [1] |
| 1-[4-[4-[(E)-1-(4-Iodophenyl)-2-phenyl-1-butenyl]phenoxy]butyl]pyrrolidine | IC50 | 1000.0 [1] |
| 2-[(6-Amino-3,5-dicyano-4-phenyl-2-pyridinyl)sulfanyl]-N-(4-fluorophenyl)acetamide | IC50 | 5700.0 [1] |
| Benzamide,n-(2-benzoylphenyl)-3-(cyclopentyloxy)-4-methoxy- | IC50 | 40000.0 [1] |
| N-(4-Chloro-phenyl)-3-cyclopentyloxy-4-methoxy-benzamide | IC50 | 1000000.0 [1] |
| Benzamide,n-(2-acetylphenyl)-3-(cyclopentyloxy)-4-methoxy- | IC50 | 40000.0 [1] |
| N-(2-Chloro-6-methyl-phenyl)-3-cyclopentyloxy-4-methoxy-benzamide | IC50 | 1000000.0 [1] |
| Benzamide,n-(3-chlorophenyl)-3-(cyclopentyloxy)-4-methoxy- | IC50 | 40000.0 [1] |
| 3-Cyclopentyloxy-4-methoxy-N-(2-nitro-phenyl)-benzamide | IC50 | 400000.0 [1] |
| 3-Cyclopentyloxy-N-(2,5-dichloro-phenyl)-4-methoxy-benzamide | IC50 | 200000.0 [1] |
| 2-[4-[3-Ethyl-4-[3-(naphthalen-1-ylmethyl)phenyl]phenyl]-3-propan-2-ylphenoxy]acetic acid | IC50 | 9.0 [1] |
| 8-Chloro-5-[3-(dimethylamino)-2-hydroxypropoxy]spiro[1,3-dihydroquinazoline-4,1'-cyclohexane]-2-one | IC50 | 101000.0 [1] |
| 8-Chloro-6-pyridin-3-ylspiro[1,3-dihydroquinazoline-4,1'-cyclohexane]-2-one | IC50 | 2860.0 [1] |
| 8-Chloro-6-[3-(4-methylpiperazine-1-carbonyl)phenyl]spiro[1,3-dihydroquinazoline-4,1'-cyclohexane]-2-one | IC50 | 6390.0 [1] |
| 5-[(8-Chloro-2-oxospiro[1,3-dihydroquinazoline-4,1'-cyclohexane]-5-yl)oxymethyl]furan-2-carboxylic acid | IC50 | 1600.0 [1] |