dimethylamino phenazone, 1 phenyl 2 3 dimethyl 4 dimethylamino 5 pyrazolone, 1 phenyl 2 3 dimethyl 4 dimethylaminopyrazol 5 one
Formerly widely used as an antipyretic and analgesic in rheumatism, neuritis, and common colds. Currently used to measure total body water.