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