Methyl 4-nitro-2-(trifluoromethoxy)pyridine-6-acetate
Methyl 3,6-dibromo-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 4-nitro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 3,6-dibromo-4-(trifluoromethoxy)pyridine-2-acetate
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