Methyl 2-(difluoromethyl)-6-nitro-5-(trifluoromethyl)pyridine-3-acetate
Methyl 2-(difluoromethyl)-6-nitro-4-(trifluoromethyl)pyridine-3-acetate
Methyl 2-(difluoromethyl)-6-nitro-3-(trifluoromethyl)pyridine-4-acetate
6-(Difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine-2-carbonyl chloride