pharmaceutical secondary standard; traceable to USP, PhEur and BP
Synonym(s): Allopurinol; 1H-Pyrazolo(3,4-d)pyrimidin-4-ol; 4-Hydroxypyrazolo(3,4-d)pyrimidine; 4-Hydroxypyrazolo[3,4-d]pyrimidine; HPP
Empirical Formula: C5H4N4O
Formula Weight: 136.11
Linear Formula: C5H4N4O
MDL Number: MFCD00599413
Melting Point: >300 °C(lit.)
Signal Word: Danger
Hazard statements: H301-H317
Precautionary statements: P280-P301 + P310
Hazard Codes (Europe) : T
Risk Statements (Europe): 25-43
Safety Statements (Europe): 28-36/37-45
WGK Germany: 2