phosphodiesterase inhibitors (Syntex)

Phosphodiesterase III inhibitors (VIVUS)

Phosphodiesterase inhibitor(Boehringer Ingelheim)

phosphodiesterase inhibitor (respiratory disease)

Phosphodiesterase V inhibitors (Plexxikon, Inc.)

kamuvudine-9

9-Aminophenanthrene

C₁₄H₁₁N

NX-9

GDF-9

SEQ-9