N 3526 (OTTO) Nicorandil, ≥98% (HPLC) Cas 65141-46-0 - used as an activator of potassium (K+) channel and inhibitor of voltage-gated calcium channel to study its effects on action potentials in long QT syndrome 2 (LQTS2) human induced pluripotent stem cell (hiPSCs)-derived cardiomyocytes.