4,5-dihydro-6-methyl-2-phenyl-3(2H)-pyridazinone
4-chloro-6-methyl-2-phenyl-2H-pyridazin-3-one
N-acetyl-sulfanilic acid-(6-methyl-3-oxo-2-phenyl-2,3-dihydro-pyridazin-4-ylamide)
4-amino-6-methyl-2-(4-nitro-phenyl)-2H-pyridazin-3-one
4-butoxy-N-(6-methyl-3-oxo-2-phenyl-2,3-dihydropyridazin-4-yl)benzamide
4-(4-butoxyphenylamino)-6-methyl-2-phenylpyridazin-3(2H)-one
1-(4-bromophenyl)-3-(6-methyl-3-oxo-2-phenyl-2,3-dihydropyridazin-4-yl)urea