630413-97-7Relevant articles and documents
Metabolite of xanthine phosphodiesterase 5 inhibitor and derivatives thereof useful for treatment of erectile dysfunction
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Page/Page column 5, (2008/06/13)
The present invention is directed to a metabolite of a xanthine Phosphodiesterase type 5 inhibitor having the following structure derivatives, and formulations thereof, and processes for preparing the same. Further disclosed are methods of treating a phys