Dipotassium guanylate

Dipotassium guanylate
Names
	IUPAC name Dipotassium 5′-guanylate
	Systematic IUPAC name Dipotassium [(2R,3S,4R,5R)-5-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate
	Other names 5′-Guanosine monophosphate dipotassium salt; 5′-Guanylic acid dipotassium salt; E628;
Identifiers
CAS Number	3254-39-5 ;
3D model (JSmol)	Interactive image ;
ChemSpider	18598953 ;
ECHA InfoCard	100.019.863
EC Number	221-849-5;
E number	E628 (flavour enhancer)
PubChem CID	22841446 ;
UNII	R87C8160YV ;
CompTox Dashboard (EPA)	DTXSID80954279 ;
	InChI InChI=1S/C10H14N5O8P.2K/c11-10-13-7-4(8(18)14-10)12-2-15(7)9-6(17)5(16)3(23-9)1-22-24(19,20)21;;/h2-3,5-6,9,16-17H,1H2,(H2,19,20,21)(H3,11,13,14,18);;/q;2+1/p-2/t3-,5-,6-,9-;;/m1../s1 Key: BCQFRUIIFOQGFI-LGVAUZIVSA-L ; InChI=1/C10H14N5O8P.2K/c11-10-13-7-4(8(18)14-10)12-2-15(7)9-6(17)5(16)3(23-9)1-22-24(19,20)21;;/h2-3,5-6,9,16-17H,1H2,(H2,19,20,21)(H3,11,13,14,18);;/q;2+1/p-2/t3-,5-,6-,9-;;/m1../s1 Key: BCQFRUIIFOQGFI-QZORJYQDBD;
	SMILES O[C@H]1[C@@H](O)[C@H](N2C=NC3=C2NC(N)=NC3=O)O[C@@H]1COP([O-])([O-])=O.[K+].[K+];
Properties
Chemical formula	C10H12K2N5O8P
Molar mass	439.403 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Last updated October 22, 2025

Dipotassium guanylate is a compound with formula K₂(C₁₀H₁₂O₄N₅PO₄). It is a potassium salt of guanylic acid.^[1]

As a food additive, it is used as a flavor enhancer and has the E number E628.^[1]

References

1 2 Nordic Council of Ministers (2002). Food Additives in Europe 2000: Status of Safety Assessments of Food Additives Presently Permitted in the EU. Nordic Council of Ministers. pp. 559–561. ISBN 9789289308298.

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[faie-1] 1 2 Nordic Council of Ministers (2002). Food Additives in Europe 2000: Status of Safety Assessments of Food Additives Presently Permitted in the EU. Nordic Council of Ministers. pp. 559–561. ISBN 9789289308298.

[1]

Names

IUPAC name Dipotassium 5′-guanylate
Systematic IUPAC name Dipotassium [(2R,3S,4R,5R)-5-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate
Other names 5′-Guanosine monophosphate dipotassium salt 5′-Guanylic acid dipotassium salt E628
Identifiers
CAS Number	3254-39-5 ^Y
3D model (JSmol)	Interactive image
ChemSpider	18598953 ^N
ECHA InfoCard	100.019.863
EC Number	221-849-5
E number	E628 (flavour enhancer)
PubChem CID	22841446
UNII	R87C8160YV
CompTox Dashboard (EPA)	DTXSID80954279
InChI InChI=1S/C10H14N5O8P.2K/c11-10-13-7-4(8(18)14-10)12-2-15(7)9-6(17)5(16)3(23-9)1-22-24(19,20)21;;/h2-3,5-6,9,16-17H,1H2,(H2,19,20,21)(H3,11,13,14,18);;/q;2+1/p-2/t3-,5-,6-,9-;;/m1../s1^N Key: BCQFRUIIFOQGFI-LGVAUZIVSA-L^N InChI=1/C10H14N5O8P.2K/c11-10-13-7-4(8(18)14-10)12-2-15(7)9-6(17)5(16)3(23-9)1-22-24(19,20)21;;/h2-3,5-6,9,16-17H,1H2,(H2,19,20,21)(H3,11,13,14,18);;/q;2+1/p-2/t3-,5-,6-,9-;;/m1../s1 Key: BCQFRUIIFOQGFI-QZORJYQDBD
SMILES O[C@H]1[C@@H](O)[C@H](N2C=NC3=C2NC(N)=NC3=O)O[C@@H]1COP([O-])([O-])=O.[K+].[K+]
Properties
Chemical formula	C₁₀H₁₂K₂N₅O₈P
Molar mass	439.403 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references