QO-40 is a pyrazolo[1,5-a]pyrimidine-7(4H)-one (PPO) derivative and an activator of the voltage-gated M-type potassium channel KCNQ encoded by the KCNQ2/3 gene (EC50: 1.25 μM).
QO-40 (100 μM) increases KCNQ2/3 currents in CHO cells[1].
References:
[1]. Jia C, et al. Activation of KCNQ2/3 potassium channels by novel pyrazolo[1,5-a]pyrimidin-7(4H)-one derivatives. Pharmacology. 2011;87(5-6):297-310.
















