Used primarily as a research tool in pharmacology to selectively activate histamine H2 receptors. It helps study gastric acid secretion mechanisms and the role of H2 receptors in cellular signaling. Due to its selectivity, it is valuable in experiments designed to differentiate H2 receptor activity from other histamine receptor subtypes. Also used in studies related to inflammation, immune response, and gastrointestinal physiology. Not used clinically but supports the development and testing of new anti-ulcer and gastroprotective drugs.