Calcium inosinate

Calcium inosinate
Names
IUPAC name
Calcium 5′-inosinate
Systematic IUPAC name
Calcium [(2R,3S,4R,5R)-3,4-dihydroxy-5-(6-oxo-1,6-dihydro-9H-purin-9-yl)oxolan-2-yl]methyl phosphate
Other names
  • Calcium inosine-5′-monophosphate
  • E633
Identifiers
3D model (JSmol)
ChemSpider
E number E633 (flavour enhancer)
UNII
  • InChI=1S/C10H13N4O8P.Ca/c15-6-4(1-21-23(18,19)20)22-10(7(6)16)14-3-13-5-8(14)11-2-12-9(5)17;/h2-4,6-7,10,15-16H,1H2,(H,11,12,17)(H2,18,19,20);/q;+2/p-2/t4-,6-,7-,10-;/m1./s1 Y
    Key: ZLHWLLPKQPKYJD-MCDZGGTQSA-L Y
  • InChI=1/C10H13N4O8P.Ca/c15-6-4(1-21-23(18,19)20)22-10(7(6)16)14-3-13-5-8(14)11-2-12-9(5)17;/h2-4,6-7,10,15-16H,1H2,(H,11,12,17)(H2,18,19,20);/q;+2/p-2/t4-,6-,7-,10-;/m1./s1
    Key: ZLHWLLPKQPKYJD-BWNJPNSSBG
  • [O-]P(OC[C@H]1O[C@@H](N2C(NC=NC3=O)=C3N=C2)[C@H](O)[C@@H]1O)([O-])=O.[Ca+2]
  • [Ca+2].[O-]P([O-])(=O)OC[C@H]3O[C@@H](n2cnc1c2ncnc1O)[C@H](O)[C@@H]3O
Properties
C10H11CaN4O8P
Molar mass 386.270 g·mol−1
sparingly
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Calcium inosinate is a calcium salt of the nucleoside inosine. Under the E number E633, it is a food additive used as a flavor enhancer.[1][2]


References

  1. ^ "GSFA Online Food Additive Details for Calcium 5'-inosinate". GSFA Online. Retrieved 2026-02-13.
  2. ^ Calcium 5′-Inosinate (PDF) (Food additive specification). FAO JECFA Monographs. Vol. 1. Food and Agriculture Organization of the United Nations (FAO). 2006. INS No. 633; CAS No. 76079-57-7. Retrieved 13 February 2026.
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