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Pharmaceuticals

PDE5 inhibitors

Blood flow and erectile function.

Avanafil AVAN C23H26ClN7O3 483.9 Vardenafil VARD C23H32N6O4S 488.6 Sildenafil SIL C22H30N6O4S 474.6 Tadalafil TAD C22H19N3O4 389.4