Ethyl 2-methyl-4-nitro-6-(trifluoromethoxy)pyridine-3-acetate
Ethyl 2-methyl-4-nitro-3-(trifluoromethoxy)pyridine-6-acetate
3-(Chloromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-6-acetic acid
Ethyl 2-methyl-3-nitro-6-(trifluoromethoxy)pyridine-4-acetate