At present, medicine employs preparations capable of inhibiting enzymes involved in the metabolism of xenobiotics; drugs of this type include, for example, iproniazid, imipramine, chlorcyclizine, and glutethimide [1, 2]. The purpose of this work was to synthesize Schiff bases from 4-aminopyrazolones, to synthesize hydrazones from nicotinic acid hydrazides and N-benzoyl-b-alanine, and to study the effect of the synthesized compounds on the ...