Sematilide (CK-1752) is a class III antiarrhythmic. It is a selectively delayed rectifier K+ current (IKr) channel blocker.

Complanatin I is a natural product that can be isolated from Astragalus complanatus.

The G280-9 peptide, a common melanoma gp100 epitope restricted by MHC-associated HLA-A2. The G280-9 sequence is unique because it could be recognized by cytotoxic T lymphocytes at very low concentrations, however it shows low total immunogenicity that may be attributable to relatively low affinity of this peptide for the HLA-A2.