... urine.50Aquantitativemethodforsimultaneousdeterminationofcarbamazepine and 5 of its 33 metabolites (10 ,11 -dihydro -1 0 ,11 -epoxycarbamaze-pine, 10 ,11 -dihydro -1 0 ,11 -dihydroxycarbamazepine, 2-hydroxycarbamazepine, 3- hydroxycarbamazepine, 10 ,11 -dihydro -1 0 -hydroxycarbamazepine) ... (formylaminoantipyridine and aminoantipyridine), and two micobio - logical metabolites (1, 5-dimethyl -1 , 2-dehydro-3-pyrazolone, 4-( 2-methylethyl ) -1 , 5- dimethyl -1 , 2-dehydro-3-pyrazole) were studied. ... dimethylami-nophenazone, phenazone, propyphenazone, 1- acetyl -1 - methyl-2-dimethyloxanoyl- 2- phenylhydrazide, 1- acetyl -1 - methyl-2-phenylhydrazide, two human metabolites ofmetamizole (formylaminoantipyridine...