1-(Diphenylacetyl)-4-(4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl)piperazine 150319-80-5 6-(Diphenylacetylpiperazinyl)pheny-5-methyl-4,5-dihydro-3-(2H)-pyridazinone 6-(alpha,alpha-Diphenylacetylpiperazinyl)phenyl-5-methyl-4,5-dihydro-3(2H)-pyridazinone 6-Dmdp Piperazine, 1-(diphenylacetyl)-4-(4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl)-