Inosine monophosphate (IMP) is a nucleotide derived from inosine, consisting of a hypoxanthine base attached to a ribose sugar and a phosphate group at the 5' position. It plays a crucial role in biochemical processes, including as an intermediate in purine metabolism and as a key component in RNA. IMP is renowned for its umami flavor-enhancing properties, often working synergistically with monosodium glutamate (MSG) to amplify savory tastes in foods like meat, fish, and processed products. As a food additive (E number E627), it is widely used in the culinary industry to improve flavor profiles without altering the primary taste. Chemically, IMP is a monophosphorylated nucleoside and is naturally occurring in various organisms, including humans, where it is involved in energy transfer and signaling pathways. Its stability in aqueous environments makes it suitable for food applications, and it has been extensively studied for its non-nutritive but sensory-enhancing effects. Research from peer-reviewed sources, such as the Journal of Agricultural and Food Chemistry, highlights its safety and efficacy at low concentrations. Overall, IMP exemplifies how biochemical compounds can enhance sensory experiences while being integral to cellular functions, with applications spanning from biochemistry to gastronomy.