Allopurinol, 25 G

Allopurinol is a purine analog. It is a structural isomer of hypoxanthine. Common Name: 4-Hydroxypyrazolo-[3,4-d]yrimidine CAS Number: 315-30-0 Molecular Weight: 136.11 Chemical Formula: C5H4N4O Solubility: 1M NaOH Storage Temperature: Room Temperature Storage Conditions: Room Temperature Appearance: White or almost white powder Solubility: Soluble in solution of potassium and NaOH; Very slightly soluble in water and in alcohol; practically insoluble in chloroform and in ether. Identification: Conforms with IR spectrum Impurity A: 0.2 % Impurity B: 0.2 % Impurity C: 0.2 % Impurity D: 0.2 % Impurity E: 0.2 % Impurity F: 0.2 % Unspecified Impurity: 0.1 % Total impurities: 1.0 % Limited of Hydrazine: 10 ppm Heavy Metals (as Pb): 20.0 ppm UV Ratio: 0.52 - 0.60 UV Spectrum: conforms Sulfated Ash: 0.1 % Loss on Drying: 0.5 % Assay (HPLC): 98.0 - 102.0 % BSE/TSE: BSE/TSE Free Total impurities other than A,B and C: 0.3 % Shipping Weight: 0.22 lbs Shipping Dimensions: 1.63 x