Magnesium diglutamate

Magnesium diglutamate is a compound with formula Mg(C₅H₈NO₄)₂. It is a magnesium acid salt of glutamic acid.

Magnesium diglutamate[1]

Names
IUPAC name Magnesium 4-amino-5-hydroxy-5-oxopentanoate
Other names Magnesium glutamate; E625; Glutamic acid hemimagnesium salt
Identifiers
CAS Number	18543-68-5
3D model (JSmol)	Interactive image
ChemSpider	3306947
ECHA InfoCard	100.038.542
E number	E625 (flavour enhancer)
PubChem CID	4092622
UNII	U515Z7SI3O
InChI InChI=1S/2C5H9NO4.Mg/c2*6-3(5(9)10)1-2-4(7)8;/h2*3H,1-2,6H2,(H,7,8)(H,9,10);/q;;+2/p-2 Key: MYUGVHJLXONYNC-UHFFFAOYSA-L InChI=1/2C5H9NO4.Mg/c2*6-3(5(9)10)1-2-4(7)8;/h2*3H,1-2,6H2,(H,7,8)(H,9,10);/q;;+2/p-2 Key: MYUGVHJLXONYNC-NUQVWONBAS
SMILES [Mg+2].O=C([O-])CCC(N)C(=O)O.[O-]C(=O)CCC(N)C(=O)O
Properties
Chemical formula	C10H16MgN2O8
Molar mass	316.549 g·mol^−1
Melting point	Tetrahydrate: 130 to 135 °C (266 to 275 °F; 403 to 408 K) (decomposes)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

It has the E number E625 and is used in foods as a flavor enhancer.

References

1. L-Glutamic acid hemimagnesium salt tetrahydrate at Sigma-Aldrich