Calcium guanylate is a compound with formula Ca(C10H12O4N5PO4).

It is the calcium salt of guanylic acid.

[1] It is present in all living cells as part of RNA, and is commercially prepared from yeast extract or fish.

As a food additive, it is used as a flavor enhancer, particularly low-salt products[1] and has the E number E629.

This article about an organic compound is a stub.