Monopotassium glutamate

Monopotassium glutamate

Names
IUPAC name Potassium 2-amino-5-hydroxy-5-oxopentanoate
Other names Potassium glutamate; E622; Glutamic acid potassium salt
Identifiers
CAS Registry Number	540778-10-7 Y
ChemSpider	13228 Y
InChI InChI=1S/C5H9NO4.K/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1 Y Key: HQEROMHPIOLGCB-UHFFFAOYSA-M Y InChI=1/C5H9NO4.K/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1 Key: HQEROMHPIOLGCB-REWHXWOFAL
Jmol-3D images	Image
PubChem	23669634
SMILES [K+].O=C([O-])C(N)CCC(=O)O
Properties
Molecular formula	C5H8KNO4
Molar mass	185.22 g·mol−1
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Monopotassium glutamate (MPG) is a compound with formula KC₅H₈NO₄. It is a potassium acid salt of glutamic acid.

It has the E number E622 and is used in foods as a flavor enhancer. It is a non-sodium MSG alternative.