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