 | Human | PDE5A | 1udt | A | | 5-{2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-1-METHYL-3-PROPYL-1H,6H,7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE | |  |
 | Human | PDE5A | 1udu | A | | 6-BENZO[1,3]DIOXOL-5-YL-2-METHYL-2,3,6,7,12,12A-HEXAHYDRO-PYRAZINO[1',2':1,6]PYRIDO[3,4-B]INDOLE-1,4-DIONE | |  |
 | Human | PDE5A | 1udu | B | | 6-BENZO[1,3]DIOXOL-5-YL-2-METHYL-2,3,6,7,12,12A-HEXAHYDRO-PYRAZINO[1',2':1,6]PYRIDO[3,4-B]INDOLE-1,4-DIONE | |  |
 | Human | PDE5A | 1uho | A | | 2-{2-ETHOXY-5-[(4-ETHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-5-METHYL-7-PROPYLIMIDAZO[5,1-F][1,2,4]TRIAZIN-4(1H)-ONE | |  |
 | Human | PDE5A | 2h40 | A | | | |  |
 | Human | PDE5A | 2h42 | A | | 5-{2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-1-METHYL-3-PROPYL-1H,6H,7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE | |  |
 | Human | PDE5A | 2h42 | B | | 5-{2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-1-METHYL-3-PROPYL-1H,6H,7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE | |  |
 | Human | PDE5A | 2h42 | C | | 5-{2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-1-METHYL-3-PROPYL-1H,6H,7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE | |  |
 | Human | PDE5A | 2h44 | A | | 5,7-DIHYDROXY-2-(4-METHOXYPHENYL)-8-(3-METHYLBUTYL)-4-OXO-4H-CHROMEN-3-YL6-DEOXY-ALPHA-L-MANNOPYRANOSIDE | |  |
 | Human | PDE5A | 3b2r | A | | 2-{2-ETHOXY-5-[(4-ETHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-5-METHYL-7-PROPYLIMIDAZO[5,1-F][1,2,4]TRIAZIN-4(1H)-ONE | |  |
 | Human | PDE5A | 3b2r | B | | 2-{2-ETHOXY-5-[(4-ETHYLPIPERAZIN-1-YL)SULFONYL]PHENYL}-5-METHYL-7-PROPYLIMIDAZO[5,1-F][1,2,4]TRIAZIN-4(1H)-ONE | |  |
 | Human | PDE5A | 3bjc | A | | 5-ethoxy-4-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)thiophene-2-sulfonamide | |  |
 | Human | PDE5A | 3shy | A | | 6-ethyl-5-fluoro-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 3shz | A | | 5-chloro-6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 3sie | A | A | 5-bromo-6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 3sie | A | B | 5-bromo-6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 3sie | B | A | 5-bromo-6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 3sie | B | B | 5-bromo-6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4g2w | A | A | 5,6-diethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4g2w | A | B | 5,6-diethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4g2y | A | A | 2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}-3,5,6,7-tetrahydro-4H-cyclopenta[d]pyrimidin-4-one | |  |
 | Human | PDE5A | 4g2y | A | B | 2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}-3,5,6,7-tetrahydro-4H-cyclopenta[d]pyrimidin-4-one | |  |
 | Human | PDE5A | 4i9z | A | A | 5-bromo-2-{5-[(4-methylpiperazin-1-yl)acetyl]-2-propoxyphenyl}-6-(propan-2-yl)pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4i9z | A | B | 5-bromo-2-{5-[(4-methylpiperazin-1-yl)acetyl]-2-propoxyphenyl}-6-(propan-2-yl)pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4ia0 | A | A | 5-bromo-2-{2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-6-octylpyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4ia0 | A | B | 5-bromo-2-{2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-6-octylpyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4md6 | A | | 3-(4-hydroxybenzyl)-1-(thiophen-2-yl)chromeno[2,3-c]pyrrol-9(2H)-one | |  |
 | Human | PDE5A | 4oew | A | | 6-ethyl-5-iodo-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE5A | 4oex | A | | 6-ethyl-2-{5-[(4-methylpiperazin-1-yl)sulfonyl]-2-propoxyphenyl}pyrimidin-4(3H)-one | |  |
 | Human | PDE6-5-Chimera | 3jab | C | | | |  |