Ethyl 5-(fluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-3-acetate
Ethyl 5-(fluoromethyl)-4-methyl-3-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(fluoromethyl)-4-methyl-5-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-(fluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-6-acetate