Flavoring agent, flavor enhancer. As seasoning: nucleotides such as guanylic acid (GMP) and inosinic acid (IMP) belong to flavoring nucleotides. In addition to their own taste, they also have the effect of improving the taste when combined with L-glutamic acid (MSG). They are used as raw materials for seasoning and soup. As a food additive: human milk contains many kinds of nucleotides such as uric acid (UMP), cytidine acid (CMP), chemicalbook, adenosine acid (AMP), guanosine acid (GMP), inosinic acid (IMP), etc., which play a role in improving the immune regulation function and memory of infants. Infant milk powder produced in Europe, America, Japan and other countries has added micro-nucleotides according to the content of human milk. There are also examples of adding RNA. As medicine raw material: nucleotides can inhibit urethritis as medicine.