Dipotassium guanylate
Encyclopedia
Dipotassium guanylate is a compound with formula K2(C10H12O4N5PO4). It is a potassium
Potassium
Potassium is the chemical element with the symbol K and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction.Potassium and sodium are...

 salt of guanylic acid.

As a food additive, it is used as a flavor enhancer and has the E number
E number
E numbers are number codes for food additives that have been assessed for use within the European Union . They are commonly found on food labels throughout the European Union. Safety assessment and approval are the responsibility of the European Food Safety Authority...

E628.
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