New pyridazine compounds with possible physiological action

: The methods of obtaining and the physicochemical and spectral characterization of eight new pyridazine derivatives are presented. Thus, the reaction of chlorine-hydrazino-pyridazine with pyruvic and alpha-ketoglutaric acids resulted in the corresponding hydrazones. Using the indications in the literature the tetrazolic, triazolic, pyrazolonic and phenyl-thiocarbazidic derivatives of hydrazino-pyridazine were synthetized. The structure of the new compounds was confirmed by carbon, hydrogen and nitrogen analyses and spectral ones in infrared.