M2 ion channel blocker-2

M2 ion channel blocker-2 (Compound 10) is an inhibitor of the M2 ion channel. It effectively blocks both the wild type and mutant M2 (L27F and V27A) ion channels. This compound exhibits potent antiviral activity against HCoV-229E, with an EC50 of 4.7 μM for cytopathic effect, but shows no efficacy against influenza A virus. Additionally, M2 ion channel blocker-2 does not significantly inhibit hERG or cytochrome P450 enzymes (CYP1A2, CYP2C19, and CYP3A4) .