PDE12-IN-1 is a powerful and specific inhibitor of PDE12, exhibiting a pIC 50 value of 9.1 for enzyme inhibition. It effectively enhances levels of 2′,5′-linked adenylate polymers (2-5A), with a pEC 50 value of 7.7. Additionally, PDE12-IN-1 demonstrates antiviral activity.

PDE12-IN-1 inhibits the EMCV-induced cytopathic effect in HeLa Ohio cells with a pIC 50 of 6.7. PDE12-IN-1 inhibits HeLa Ohio cell proliferation in the absence of EMCV infection with a pIC 50 of 5.7. PDE12-IN-1 inhibits the proliferation of both HeLa and HeLaΔPDE12 cells with a pIC 50 of 5.7. PDE12-IN-1 inhibits HRV infection with a pIC50 of 6.9[1].