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: 0.4299 lbs
Shipping Dimensions: 3.50
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