Name:Propyphenazone

SynonymsIsopropylantipyrine; 1,5-Dimethyl-4-(1-methylethyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

 

Molecular Structure:   

 

Molecular Formula:C₁₄H₁₈N₂O

Molecular Weight:230.31

CAS Registry Number:479-92-5

Phenazone, or phenazon, is an analgesic. It was first synthesized by Ludwig Knorr in 1883. It is formed by reducing diortho- dinitrodiphenyl with sodium amalgam and methyl alcohol, or by heating diphenylene- ortho- dihydrazine with hydrochloric acid to 150 C. It crystallizes in needles which melt at 156 C. Potassium permanganate oxidizes it to pyridazine tetracarboxylic acid.

Analgesine, Antipyrine, Dim¨¦thyloxyquinazine, Oxydim¨¦thylquinazine, Oxydim¨¦thylquinizine, Pyrazoline