2.Properties & index: Appearance: white or off-white crystal Melting point: ≥81C Specific Rotation :-56 ± 2 Assay: ≥98 % Residue on ignition:≤0.5% Heavy metals( ppm ) ≤ 10 3. Uses: Intermediate of nucleoside Biochemical research Health care product 4.Packing: Sealed, plastic bag lined carton; Specification: 20 kg/drum, or following your demand. 5.Storage & transportation: Kept in cool and dry place, avoid direct sunlight. The temperature is not more than 5C.