ANNEX IU.K.

E 633 CALCIUM INOSINATEU.K.

SynonymsCalcium 5'-inosinate
Definition
Chemical nameCalcium inosine-5'-monophosphate
Chemical formulaC10H11CaN4O8P· nH2O
Molecular weight386,19 (anhydrous)
AssayContent not less than 97,0 % on the anhydrous basis
DescriptionOdourless, colourless or white crystals or powder
Identification
A.Positive test for ribose, and for organic phosphate and for calcium
B.pH of a 0,05 % solution
Between 7,0 and 8,0
C.Spectrometry:
maximum absorption of a 20 mg/l solution in 0,01N HCl at 250 nm
Purity
WaterNot more than 23,0 % (Karl Fischer)
Other nucleotidesNot detectable by thin-layer chromatography
LeadNot more than 2 mg/kg