| Similarity | Rank | |
|---|---|---|
| monophosphate | 0.953 | 90460 |
| PDE5 | 0.867 | 36875 |
| phosphodiesterase | 0.866 | 53286 |
| cGMP | 0.842 | 42119 |
| PDE-5 | 0.830 | 59128 |
| arginine | 0.821 | 50005 |
| cavernosum | 0.819 | 79648 |
| adenosine | 0.818 | 62814 |
| vasodilation | 0.810 | 78390 |
| dapoxetine | 0.804 | 38111 |
| monoamine | 0.804 | 84399 |
| inhibitors | 0.803 | 13701 |
| Sildenafil | 0.802 | 23972 |
| tadacip | 0.799 | 90308 |
| Tadalafil | 0.797 | 37951 |
| reductase | 0.792 | 64818 |
| L-arginine | 0.792 | 67070 |
| Revatio | 0.791 | 93669 |
| nitric | 0.791 | 25998 |
| Levitra | 0.791 | 16011 |
| vasodilator | 0.790 | 91177 |
| citrate | 0.790 | 18873 |
| protease | 0.786 | 47097 |
| Avodart | 0.786 | 91801 |
| Inhibitors | 0.784 | 70527 |