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(2001)4-hydroxy-2-methyl-5-[2-methylsulfonyl-4-(trifluoromethyl)phenyl]pyridazin-3-one
4-methoxy-2-methyl-5-[2-methylsulfonyl-4-(trifluoromethyl)phenyl]pyridazin-3-one
4-methoxy-2-methyl-5-[2-methylsulfonyl-4-(trifluoromethyl)phenyl]-6-nitro-pyridazin-3-one
6-amino-4-methoxy-2-methyl-5-[2-methylsulfonyl-4-(trifluoromethyl)phenyl]-pyridazin-3-one
4-methoxy-2-methyl-5-[2-methylsulfonyl-4-(trifluoromethyl)phenyl]-1H-pyridazine-3,6-dione