Fructose-1,6-bisphosphate trisodium salt (FBP, CAS 38099-82-0) is a phosphorylated sugar derivative and a key intermediate in the glycolytic and gluconeogenic metabolic pathways. It is a white to off-white crystalline powder, highly soluble in water. The trisodium salt form enhances its stability and solubility for research and potential therapeutic applications. Its primary application is in biochemical research as a substrate or allosteric activator for enzymes such as aldolase and pyruvate kinase, crucial for studying cellular energy metabolism. In the medical field, it has been investigated as a cardioprotective and anti-ischemic agent, with studies exploring its potential to improve cellular energy status during hypoxia or ischemia. It is also considered a functional ingredient in certain pharmaceutical formulations. While not a typical bulk excipient, its specific metabolic role places it in the category of specialized biochemical agents with potential therapeutic utility, distinguishing it from common synthetic building blocks or general reagents.