(R)-Irsenontrine ((R)-E2027), the R-enantiomer of Irsenontrine , is a potent phosphodiesterase 9 (PDE9) inhibitor with an IC50 value of 0.041 μM. (R)-Irsenontrine can be used for the research of neurological diseases[1].
[1]. Yoshihiko N, et, al. Pyrazoloquinoline derivative. WO2013051639A1.
















