Methyl 2-methyl-4-nitro-5-(trifluoromethoxy)pyridine-3-acetate
Ethyl 5-(chloromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-methyl-3-nitro-6-(trifluoromethoxy)pyridine-5-acetate
Ethyl 3-(chloromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-5-acetate