1 JWF 5-[4-(4-methylpiperazin-1-yl)phenylamino]-2-(4-chlorophenyl)-6-(1h-1,2,4-triazol-5-yl)-3(2h)-pyridazinone 1.000 2 JW7 5-(cyclohexylamino)-2-phenyl-6-(1h-1,2,4-triazol-5-yl)-3(2h)-pyridazinone 0.758