SB-237376 free base is a potent inhibitor of potassium and calcium channels, primarily targeting the rapidly activating delayed rectifier potassium current I(Kr) with an IC50 of 0.42 μM. Additionally, at elevated concentrations, it effectively blocks the L-type calcium current I(Ca,L). In studies utilizing rabbit ventricular models, SB-237376 free base has been shown to induce early afterdepolarizations (EADs) at a concentration of 3 µM. This compound presents a lower proarrhythmic risk compared to other known I(Kr) inhibitors, making it valuable for investigations into arrhythmia-related conditions.
SB-237376 free base is a potent inhibitor of potassium and calcium channels, primarily targeting the rapidly activating delayed rectifier potassium current I(Kr) with an IC50 of 0.42 μM. Additionally, at elevated concentrations, it effectively blocks the L-type calcium current I(Ca,L). In studies utilizing rabbit ventricular models, SB-237376 free base has been shown to induce early afterdepolarizations (EADs) at a concentration of 3 µM. This compound presents a lower proarrhythmic risk compared to other known I(Kr) inhibitors, making it valuable for investigations into arrhythmia-related conditions.
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