HCN-IN-1 is a TLR4 inhibitor and HCN channel modulator with activity against HCN2 and HCN4.HCN-IN-1 inhibits TLR4-mediated alkaline phosphatase (SEAP) signal activity.HCN-IN-1 reduces HCN2 current across tested voltages, shifts voltage-dependent activation to more hyperpolarized potentials, slows activation kinetics, and does not affect deactivation process.HCN-IN-1 blocks HCN4 current.HCN-IN-1 exhibits analgesic, anti-inflammatory, and anti-anginal effects.HCN-IN-1 can be used for the research of inflammatory pain, neuropathic pain, heart failure, inflammation[1].