Calcium diglutamate

Calcium diglutamate, sometimes abbreviated CDG and also called calcium glutamate, 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.[1] As a soluble source of calcium ions, this chemical is also used as a first-aid treatment for exposure to hydrofluoric acid.[2]

Calcium diglutamate

Names
IUPAC name Calcium bis[(2S)- 2-amino-4-carboxy-butyrate]
Other names Calcium glutamate, L-Glutamic acid calcium salt
Identifiers
CAS Number	5996-22-5
3D model (JSmol)	Interactive image
Abbreviations	CDG
Beilstein Reference	11158966
ChemSpider	2766261
ECHA InfoCard	100.025.307
E number	E623 (flavour enhancer)
PubChem CID	3527266
UNII	9FA5OTO85L
CompTox Dashboard (EPA)	DTXSID00894986
InChI 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
SMILES C(CC(=O)[O-])C(C(=O)[O-])N.C(CC(=O)[O-])C(C(=O)[O-])N.[Ca+2]
Properties
Chemical formula	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

References

1. Ball, P.; Woodward, D.; Beard, T.; Shoobridge, A.; Ferrier, M. (Jun 2002). "Calcium diglutamate improves taste characteristics of lower-salt soup". European Journal of Clinical Nutrition (Free full text). 56 (6): 519–523. doi:10.1038/sj.ejcn.1601343. ISSN 0954-3007. PMID 12032651.
2. "First Aid for Chemical and Cleanroom Laboratories". Retrieved 2009-06-10.