Ethyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 5-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-(bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-acetate
Ethyl 6-(aminomethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylate