European Pharmacopoeia (EP) Reference Standard
Synonym(s): Antipyrine; 2,3-Dimethyl-1-phenyl-3-pyrazolin-5-one; Phenazone
Empirical Formula: C11H12N2O
Formula Weight: 188.23
Linear Formula: C11H12N2O
MDL Number: MFCD00003146
Melting Point: 109-111 °C(lit.)
Beilstein Registry Number: 157775