A series of substituted benzyl-1H-1,2,3-triazolo[4,5-d]pyridazidine 4,7-dia
nes 5 were prepared via heating the corresponding 1-substituted benzyl-4,5-
bis (hydrazinocarbonyl)-1,2,3-triazoles 4. All new compounds were character
ized by spectroscopic tools and gave satisfactory elemental analysis.