ChemCalc
You entered: C5H4N2O4 . xH2O
The formula is: C5H4N2O4.nH2O
The compound seems to be a salt or a hydrate.
The mass of C5H4N2O4.nH2O is not defined
Mass of C5H4N2O4: 156.09776
Mass of H2O: 18.01528
Isotopic distribution
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