Allopurinol
C5H4N4O
136.11
4H-Pyrazolo[3,4-d]pyrimidin-4-one, 1,5-dihydro-;
1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one;
1H-Pyrazolo[3,4-d]pyrimidin-4-ol [315-30-0]
4H-Pyrazolo[3,4-d]pyrimidin-4-one, 1,5-dihydro-;
1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one;
1H-Pyrazolo[3,4-d]pyrimidin-4-ol [315-30-0]
DEFINITION
Allopurinol contains NLT 98.0% and NMT 102.0% of allopurinol (C5H4N4O), calculated on the dried basis.