Copanlisib dihydrochloride

Copanlisib dihydrochloride is a potent, selective pan-class I PI3K inhibitor that acts through ATP-competitive mechanisms. It exhibits remarkable inhibitory activity with IC50 values of 0.5 nM, 0.7 nM, 3.7 nM, and 6.4 nM for PI3Kα, PI3Kδ, PI3Kβ, and PI3Kγ, respectively, demonstrating over 2,000-fold selectivity against other lipid and protein kinases, except for mTOR. This compound has been shown to possess significant antitumor activity, making it a valuable reagent for cancer research and therapeutic development focusing on the PI3K pathway.