Ethyl 2-(difluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-(fluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 5-(fluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-(fluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-5-acetate