Calcium diglutamate

Calcium diglutamate
Names
IUPAC name
Calcium bis[(2S)- 2-amino-4-carboxy-butyrate]
Other names
  • Calcium biglutamate
  • L-Glutamic acid calcium salt
Identifiers
3D model (JSmol)
Abbreviations CDG, CBG
11158966
ChemSpider
ECHA InfoCard 100.025.307
E number E623 (flavour enhancer)
UNII
  • anhydrous: InChI=1/2C5H9NO4.Ca.2H/c2*6-3(5(9)10)1-2-4(7)8;;;/h2*3H,1-2,6H2,(H,7,8)(H,9,10);;;/p-4/t2*3-;;;/m00.../s1/r2C5H9NO4.CaH2/c2*6-3(5(9)10)1-2-4(7)8;/h2*3H,1-2,6H2,(H,7,8)(H,9,10);1H2/p-4/t2*3-;/m00./s1
    Key: ZKUDDWCZGPUNQH-VDEFSOALBX
  • anhydrous: C(CC(=O)[O-])C(C(=O)[O-])N.C(CC(=O)[O-])C(C(=O)[O-])N.[Ca+2]
Properties
C10H16CaN2O8
Molar mass 332.322 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Calcium diglutamate, sometimes abbreviated CDG and also called calcium biglutamate, is a compound with formula Ca(C5H8NO4)2. It is a calcium acid salt of glutamic acid. CDG is a flavor enhancer (E number E623)—it is the calcium analog of monosodium glutamate (MSG). Because the glutamate is the actual flavor-enhancer, CDG has the same flavor-enhancing properties as MSG but without the increased sodium content. Notably, only the L isomer is used in flavouring as D-glutamate does not have an umami/savoury flavour.

As a soluble source of calcium ions, this chemical is also used as a first-aid treatment for exposure to hydrofluoric acid.

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