AL-100; Urbol; 1H-Pyrazolo[3,4-d]pyrimidin-4-ol; Apurol; 4H-Pyrazolo[3,4-d]pyrimidin-4-one, 1,5-dihydro-; Remid; Allopurinol; Pural; HPP; Anzief; 1H-Pyrazolo(3,4-d)pyrimidin-4-ol (4-Hydroxypyrazolo(3,4-d)pyrimidine; allopurinal; aloral; 1H-Pyrazolo[3,4-d]pyrimidin-4(5H)-one; Apurin; 4-HPP; 4-Hydroxypyrazolo[3,4-d]pyrimidine;

C5H4N4O

136.11100

74.43000

White to gray white solid

1.89g/cm3

>300 °C(lit.)

290.8ºC at 760 mmHg

129.7ºC

The warehouse is low temperature, ventilated, dry and stored separately from the food materials.