Used as substrate in determination of hexokinase C10H14N5Na2O13P3 M.W. 551.15 Assay min 95.0% Water 6.0 - 12.0% pH(1% in water) 2.5 - 3.5 Heavy Metals (as Pb) max 0.001% Iron(Fe) max 0.001% Chloride(CI) max 0.05%