Leksellin
Leksellin is a fictional chemical compound commonly used in pharmacology education and in hypothetical case studies to illustrate principles of receptor pharmacology. It is described as a synthetic, small-molecule ligand with high affinity for a hypothetical receptor subtype designated R. In teaching materials, Leksellin helps demonstrate how ligand concentration relates to receptor occupancy and downstream responses, as well as how agonist, partial agonist, and antagonist behaviors can vary with context.
Because Leksellin is not a real drug, there are no clinical data, safety profiles, or regulatory statuses
Descriptions of Leksellin's mechanism of action also vary by teaching scenario. In some examples it is depicted
Origin and usage notes: Leksellin appears in a range of educational materials and fictitious datasets. It is