Molecular formula: C8H12N4O5 Molecular weight: 244.20 CAS No.: 36791-04-5 Structure Formula: dentification: White crystals, odorless, tasteless Specific rotation: -35.0 - -37.0° Identification (1)Show positive reaction (2)The retention time complies to standard. (3)Infrared absorption pH: 4.0-6.5 UV absorption: ≤0.02 Relate substance: ≤1.0% Loss on drying: ≤0.5% Residue on ignition: ≤0.1% Heavy metals: ≤10ppm Assay: 98.5-101.5% Packing: 20kg/barrel Complies with CP2005 Storage: Keep dry, stable at room temperature.