D(-)-ribose

TESTSTANDARD RESULT Appearance White or slightly yellow crystals or crystalline powder, reducing suger. White crystals, reducing sugar Assay 97.0 102.0% (HPLC, dry basis) 99.0% Loss on Drying ≤3.0% (in vacuum, 60°C, 3hours) 0.20% Residue on ignition (Sulfated) ≤0.20% 0.06% Specific Rotation -18.0° -22.0° -20.1° State of solution ≥95% 99.1% Heavy Metals ≤10 ppm <5 ppm Arsenic (As2O3) ≤ 2ppm <0.5 ppm Other saccharide No detectable (chromatographically) Conforms Lead (Pb) ≤0.1mg/kg <0.05mg/kg Arsenic (As) ≤0.1mg/kg <0.01mg/kg Aerobic Plate Count <100 cfu/g Conforms Pathogenic Bacteria Negative Conforms Conclusion Conforms AJ192 Conclusion: Complies with the standard of AJ192.