Is disodium guanosine 5-monophosphate vegan?

Disodium guanosine 5-monophosphate, also known as disodium guanylate or food additive E627, is a sodium salt of guanylic acid used as a savory flavor enhancer. It works synergistically with glutamates, such as monosodium glutamate, to produce an intense umami taste profile at low concentrations. Food manufacturers commonly add it to instant noodle seasoning packets, flavored potato chips, commercial gravies, bouillon cubes, canned soups, processed meats, and savory snack crackers.

This additive is produced commercially from animal tissues, primarily dried sardines or other small fish species, as well as meat extracts. The natural ribonucleotides are isolated from these animal tissues and chemically converted into the purified disodium salt for distribution to food processors. Because the commercial supply of this substance relies on animal-derived raw materials, disodium guanosine 5-monophosphate is not vegan.