3H-Pyrazol-3-one, 1, 2-dihydro-1, 5-dimethyl-2-phenyl- Synonyms:Antipyrine(8CI); 1, 5-Dimethyl-2-phenyl-1, 2-dihydropyrazol-3-one; 2, 3-Dimethyl-1-phenyl-3-pyrazolin-5-one; 2, 3-Dimethyl-1-phenyl-5-pyrazolone; Azophen; Azophene; Dentigoa N; Dimethyloxychinizin; Fenazone; Methozin; NSC7945; Oxydimethylquinazine; Parodyne; Phenazon; Phenazone; Phenazone(pharmaceutical); Phenylon; Phenylone; Pyrazophyl; Sedatin; Sedatine; CAS Registry Number:60-80-0 EINECS:200-486-6 Molecular Formula:C11H12N2O Molecular Weight:188.23 Molecular Structure:This structure is also available as a 2d Mol file Appearance:colourless crystals Density:1.109gcm3 Boiling Point:319 Melting Point:109-113 Flash Point:109.4C Storage Temperature:Refrigerator Refractive index:1.553 Solubility:1000 gL (20 oC) Stability:Stable. Incompatible with ammonia, strong acids, alkalies, strong oxidizing agents, metallic salts, phenol. Usage:Analgesic