6-diethylamino-3-(3,5-dimethylpyrazol-1-yl)tetrazine

3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-(4-methyl-1-piperazinyl)-1,2,4,5-tetrazine

3-(3,5-dimethylpyrazol-1-yl)-6-(2-hydroxyethylamino)-1,2,4,5-tetrazine