[Toxicity and radio-protective properties of pyridazine derivatives].

In experiments in irradiated (CBA X S57B1)F1 mice a study was made of toxicity and radioprotective efficiency of some pyridazine and pyridazine dione derivatives. Some of these substances were shown to have a moderate protective action when administered intraperitoneally. A correlation was revealed between the chemical structure and the radioprotective properties of the compounds.