Description_x000D_ Packaging_x000D_ 25 mg in poly bottle_x000D_ 5 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ DK-AH 269 (Cilobradine) is an HCN Channel blocker; an open channel blocker of neuronal Ih and related cardiac If channels._x000D_ Features and Benefits_x000D_ This compound is a featured product for Cyclic Nucleotide research. Click here to discover more featured Cyclic Nucleotide products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm._x000D_ This compound is featured on the Cyclic Nucleotide-Gated (CNG) and Hyperpolarization Activated Cyclic Nucleotide-Gated (HCN) Channels page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.